HSK 7-9
绊脚石
bànjiǎoshí名
stumbling block; obstacle; someone who gets in your way
缺乏耐心是进步的绊脚石。
Quē fá nài xīn shì jìn bù de bàn jiǎo shí.
A lack of patience is a stumbling block to progress.
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Appears across levels (7-9) in the HSK 3.0 word list.