a person who is considered a disgrace to a group or family
被认为是团体或家庭耻辱的人 (bèi rènwéi shì tuántǐ huò jiātíng chǐrǔ de rén)
"He is the black sheep of the family."
"他是家里的黑羊。" (tā shì jiālǐ de **hēi yáng**.)
to make a small mistake
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to quickly become good friends
to improve oneself by understanding and correcting errors
to divide the work or responsibility among people