他顺手拿走了书。
He picked up the book in passing.
as an incidental action while doing sth else; while one is at it; in passing; smooth; easy; without difficulty
Every character draws itself, stroke by stroke. Then grab the brush: trace it yourself and hear the word when you finish.
Nice writing!
Chinese words snap together like bricks. Every word below shares a character with this one, so you are already halfway to knowing it.
他顺手拿走了书。
He picked up the book in passing.
这个工具很顺手。
This tool is handy.