to conceal one's talent or ability; to keep one's skills under wraps; to hide one's light under a bushel
他虽然在编程方面有很深的造诣，但在团队项目中总是表现得不露锋铓，乐于听取他人的意见。
Although he has profound accomplishments in programming, he always keeps his abilities under wraps in team projects, willing to listen to others' opinions.
Frequency:
Next Idiom