Stroke order
Show the animation Stroke data from Make Me a Hanzi, derived from the Arphic PL fonts under the Arphic Public License.
Show the animation 
Stroke data from Make Me a Hanzi, derived from the Arphic PL fonts under the Arphic Public License.
How it used to be written
同
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Oracle bone script 商 -
Clerical script 東漢 - See all 13 forms
时
These are the forms of 時, the traditional character: 时 is a twentieth-century simplification, found in no ancient corpus.
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Warring States script 春秋晚期或戰國早期.秦 -
Clerical script 東漢 - See all 11 forms
Forms, sources and dates: the 字形演變 database of 小學堂, Academia Sinica, public domain (CC0).
Examples
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他们同时到了巴黎。
They arrived in Paris at the same time.
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他进来的同时，铃响了。
He came in, and at the same time the bell rang.
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圣保罗同时是全世界最贫困的城市之一也是最富有的城市之一。
At the same time, São Paulo is both one of the world's poorest and richest cities.
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天文学同时是最古老也最现代的科学。
Astronomy is at the same time the most ancient and the most modern science.
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我们同时到的。
We arrived at the same time.
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我每天工作不同时段。
Every day I work different hours.
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所有的灯光同时灭了。
All at the same time, the lights went out.