一

一 in English

yī numeral HSK 1: one / single / a (article) / as soon as / entire / whole / all / throughout / "one" radical in Chinese characters (Kangxi radical 1) / also pr. [yao1] for greater clarity when spelling out numbers digit by digit

Measure word

颗 kē classifier for small spheres, pearls, corn grains, teeth, hearts, satellites etc attested in use
次 cì next in sequence; second; the second (day, time etc); secondary; vice-; sub-; infra-; inferior quality; substandard... attested in use
辆 liàng classifier for vehicles attested in use
间 jiān between; among; within a definite time or space; room; section of a room or lateral space between two pairs of pillars... attested in use

Stroke data from Make Me a Hanzi, derived from the Arphic PL fonts under the Arphic Public License.

Forms, sources and dates: the 字形演變 database of 小學堂, Academia Sinica, public domain (CC0).

"亲爱的, 上床吧。" "不, 还不行。我在Tatoeba上还必须翻译一些句子。"

"Honey, come to bed." "No, not yet. I still have to translate some sentences on Tatoeba."
"侏儒流氓"是德國導演韋納荷索在一九七零年的一部電影。

Even Dwarfs Started Small is a 1970 film by German director Werner Herzog.
"妈妈，我能吃一块饼干吗？" "不行，不该在3餐间吃。"

"Mum, can I have a biscuit?" "No, you shouldn't eat between meals."
“一只猫？”老先生问。

"A cat?" asked the old man.
“你去哪儿了？”“我去了火车站送我的一个朋友。”

"Where have you been?" "I have been to the station to see a friend off."
“你的汽车是什么牌子的？”“是一辆福特。”

"What make is your car?" "It is a Ford."
“你累吗？“ “不，一点儿也不。“

"Are you tired?" "No, not at all."
“啊！”是一个感叹词。

"Ah!" is an interjection.