Translation

• lit. ripe as a melon that rolls from its vine (idiom)
• fig. to know fluently
• to know sth inside out
• to know sth by heart

Synonyms

• 内行, 圆熟, 在行, 如臂使指, 娴熟, 得心应手, 懂行, 挥洒自如, 游刃有余, 滚瓜流油, 炉火纯青, 烂熟, 熟, 熟练, 熟能生巧, 目无全牛, 科班出身, 稳练, 纯, 纯熟, 自如, 融汇贯通, 见长, 训练有素, 谙练, 运用自如, 运用裕如, 驾轻就熟