HSK 7-9
抖
dǒu动
to tremble; to shake out; to reveal; to make it in the world
他冷得双手不停发抖。
Tā lěng de shuāng shǒu bù tíng fā dǒu.
His hands kept shaking from the cold.
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Appears across levels (7-9) in the HSK 3.0 word list.