脆弱 cuì ruò weak / frail syn 弱点 弱點 ruò diǎn weak point / failing syn 软弱 軟弱 ruǎn ruò weak / feeble / flabby syn 缺点 缺點 quē diǎn weak point / fault / shortcoming / disadvantage / CL:個|个[ge4] syn 虚弱 虛弱 xū ruò weak / in poor health syn 弱智 ruò zhì weak-minded / mentally deficient / retarded syn 地雷 dì léi land mine (CL:顆|颗[ke1]) / (fig.) sore point / weak spot 没劲 沒勁 méi jìn to have no strength / to feel weak / exhausted / feeling listless / boring / of no interest syn 懦弱 nuò ruò cowardly / weak syn 弱小 ruò xiǎo small and weak / puny / the small and weak / children / women and children syn 微弱 wēi ruò weak / faint / feeble syn 衰老 shuāi lǎo to age / to deteriorate with age / old and weak syn 薄弱 bó ruò weak / frail syn 破绽 破綻 pò zhàn split seam / (fig.) flaw / weak point syn 硫酸 liú suān sulfuric acid H2SO4 / sulfate 柔弱 róu ruò weak / delicate syn 尖酸 jiān suān harsh / scathing / acid (remarks) syn 盐酸 鹽酸 yán suān hydrochloric acid HCl 弱势 弱勢 ruò shì vulnerable / weak 衰弱 shuāi ruò weak / feeble syn 瘦弱 shòu ruò thin and weak syn 碳酸 tàn suān carbonic acid / carbonate 两性 兩性 liǎng xìng male and female / both types (acid and alkaline, positive and negative etc) / (chemistry) amphoteric 力不从心 力不從心 lì bù cóng xīn less capable than desirable (idiom) / not as strong as one would wish / the spirit is willing but the flesh is weak syn 脂肪酸 zhī fáng suān fatty acid 单薄 單薄 dān bó weak / frail / thin / flimsy syn 软绵绵 軟綿綿 ruǎn mián mián soft / velvety / flabby / weak / schmaltzy syn 胃酸 wèi suān gastric acid syn 指正 zhǐ zhèng to point out mistakes or weak points for correction / to comment / criticism syn 磷酸 lín suān phosphoric acid 丙烯酸 bǐng xī suān acrylic acid C3H4O2 乳酸 rǔ suān lactic acid 乘虚而入 乘虛而入 chéng xū ér rù to enter by exploiting a weak spot (idiom) / to take advantage of a lapse 短处 短處 duǎn chù shortcoming / defect / fault / one's weak points syn 孱弱 chán ruò delicate / frail / impotent / weak syn 氨基酸 ān jī suān amino acid 硝酸 xiāo suān nitric acid syn 弱不禁风 弱不禁風 ruò bù jīn fēng lit. too weak to stand up to the wind (idiom) / fig. extremely delicate / fragile syn 虎头蛇尾 虎頭蛇尾 hǔ tóu shé wěi lit. tiger's head, snake's tail (idiom) / fig. a strong start but weak finish syn 一板一眼 yī bǎn yī yǎn lit. one strong beat and one weak beats in a measure of music (two beats in the bar) (idiom) / fig. follow a prescribed pattern to the letter / scrupulous attention to detail syn 油酸 yóu suān oleic acid 酸雨 suān yǔ acid rain 乏力 fá lì lacking in strength / weak / feeble / not up to the task syn 乙酸 yǐ suān acetic acid (CH3COOH) / ethanoic acid syn 毛毛雨 máo mao yǔ drizzle / light rain / (fig.) mere trifle / sth that has only a weak effect syn 核酸 hé suān nucleic acid / (coll.) nucleic acid test (abbr. for 核酸檢測|核酸检测[he2suan1 jian3ce4]) 柠檬酸 檸檬酸 níng méng suān citric acid 怯弱 qiè ruò timid / weak syn 强弱 強弱 qiáng ruò strong or weak / intensity / amount of force or pressure 酸溜溜 suān liū liū sour / acid syn 醋酸 cù suān acetic acid (CH3COOH) / acetate syn 叶酸 葉酸 yè suān folic acid 心有余而力不足 心有餘而力不足 xīn yǒu yú ér lì bù zú the will is there, but not the strength (idiom) / the spirit is willing but the flesh is weak syn 氰酸 qíng suān cyanic acid HCN 取长补短 取長補短 qǔ cháng bǔ duǎn lit. use others' strengths to make up for one's weak points (idiom from Mencius) / to use this in place of that / what you lose on the swings, you win on the roundabouts syn 苯甲酸 běn jiǎ suān benzoic acid C6H5COOH 硬脂酸 yìng zhī suān stearic acid / stearate 硼酸 péng suān boric acid H3BO3 谷氨酸 穀氨酸 gǔ ān suān glutamic acid (Glu), an amino acid 外强中干 外強中乾 wài qiáng zhōng gān strong in appearance but weak in reality (idiom) syn 阿斗 ā dǒu A-dou, nickname of Liu Shan 劉禪|刘禅[Liu2 Shan4] (207-271), son of Liu Bei, reigned as Shu Han emperor 233-263 / (fig.) weak and inept person syn 甲酸 jiǎ suān formylic acid (HCOOH) / formic acid / methanoic acid 水杨酸 水楊酸 shuǐ yáng suān salicylic acid 鸡肋 雞肋 jī lèi chicken ribs / sth of little value or interest / sth of dubious worth that one is reluctant to give up / to be physically weak 酥软 酥軟 sū ruǎn weak (of body or limbs) / limp / gone soft syn 烟酸 煙酸 yān suān niacin (vitamin B3) / 3-Pyridinecarboxylic acid C6H5NO2 / nicotinic acid syn 硅酸 guī suān silicic acid / silicate 羸弱 léi ruò frail / weak 抗坏血酸 抗壞血酸 kàng huài xuè suān vitamin C / ascorbic acid 亚硝酸 亞硝酸 yà xiāo suān nitrous acid 瘫软 癱軟 tān ruǎn limp / weak syn 乳酸菌 rǔ suān jūn lactic acid bacteria 草酸 cǎo suān oxalic acid C2H2O4 薄弱环节 薄弱環節 bó ruò huán jié weak link / loophole 软肋 軟肋 ruǎn lèi rib cartilage / (fig.) weak spot / soft underbelly 差生 chà shēng weak student 疲弱 pí ruò tired / weak / exhausted syn 耐酸 nài suān acid-resistant 手无缚鸡之力 手無縛雞之力 shǒu wú fù jī zhī lì lit. lacking the strength even to truss a chicken (saying) / fig. weak / unaccustomed to physical work syn 赖氨酸 賴氨酸 lài ān suān lysine (Lys), an essential amino acid 酒石酸 jiǔ shí suān tartaric acid 蛋氨酸 dàn ān suān methionine (Met), an essential amino acid 恹恹 懨懨 yān yān weak / worried / sickly / wan syn 短板 duǎn bǎn short stave of the barrel (which allows the contents to escape) / (fig.) shortcoming / weak point 酪氨酸 lào ān suān tyrosine (Tyr), an amino acid 耐受性 nài shòu xìng tolerance (to heat, acid etc) / resistance 醇酸 chún suān alkyd / alcohol acid / hydroxyacid 羧酸 suō suān carboxylic acid 丙氨酸 bǐng ān suān alanine (Ala), an amino acid 病弱 bìng ruò sick and weak / sickly / invalid 透明质酸 透明質酸 tòu míng zhì suān hyaluronic acid / hyaluronan 弱碱 弱鹼 ruò jiǎn weak base (alkali) 冰醋酸 bīng cù suān glacial acetic acid syn 半胱氨酸 bàn guāng ān suān cysteine (Cys), an amino acid / mercaptoethyl amine 亚麻酸 亞麻酸 yà má suān linolenic acid 甘氨酸 gān ān suān glycine (Gly), an amino acid 精氨酸 jīng ān suān argnine (Arg), an essential amino acid 色氨酸 sè ān suān tryptophan (Trp), an essential amino acid 优柔 優柔 yōu róu gentle / carefree / indecisive / weak syn 