他随手关了灯。
He casually turned off the light.
随手
conveniently; without extra trouble; while doing it
Watch it being written
Every character draws itself, stroke by stroke. Then grab the brush: trace it yourself and hear the word when you finish.
随
手
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Build with these blocks
Chinese words snap together like bricks. Every word below shares a character with this one, so you are already halfway to knowing it.
随
See it in sentences
请随手关门。
Please close the door behind you.