hand back 退还; hand in 交上; hand into 扶...进去 扶...上(车); hand over 移交; hand down 传下来, 宣布; hand on 传递下去; hand out 把...拿出...
on the other hand另一方面; in hand adv. 在手头;在进行中;在控制中; one hand(双打开始时)一次发球权; hand in hand手拉手地;联合; hand in交上...