pains felt by young people in the bones or joints (= places where two bones are connected) of their legs发育期痛(青少年发育时骨头及关节的疼痛)
the problems of a new organization or activity(新建组织或新活动所经历的)初期困难,发展时期的困难
👨🏻🏫 Mr. Ng 劍橋詞典 📚 – cambridge.mister5️⃣.net
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