pick down up

pick down up get down calm down knock down pick up辨析 pick up,pick out,pick off,cut off,cut down ,cut up编一段话 翻译Pick up the paper and fold side A down. 澳洲火车时刻表 pick up only 和 set down only Please b___ down to pick up the book. give it up ；pick it up；put it up；put it down；分别是什么意思? pick up pick up 和pick区别 pick out;pick up;pick over区别 请分别用pick off.cut off.cut down.cut up造句,并翻译出来, U pick me up to let me down,前面那个U,是句子里的吗?