growing pains
noun [ plural ] uk/ˈɡrəʊ.ɪŋ ˌpeɪnz/ us/ˈɡroʊ.ɪŋ ˌpeɪnz/
(PHYSICAL PAIN)
发育期痛（青少年发育时骨头及关节的疼痛）
pains felt by young people in the bones or joints (= places where two bones are connected) of their legs
(DIFFICULTIES)
（新建组织或新活动所经历的）初期困难，发展时期的困难
the problems of a new organization or activity