Aa (an) 一;一个 a few 几个;一些a little 少量的 a long time ago 很久以前 a lot of 很多;大量的 a pair of 一条;一副;一双 a piece of 一张;一片 about 关于 act ... out 表演 activity 活动 adult 成年人 afraid (be afraid of)害怕…
Pick up 的用法ps暂存盘已满鹤嘴锄掘地macfee pick up the hard clay跌倒后爬起 He slipped and fell, but quickly picked him up.恢复健康鼓勇气 A bite of something might pick you up. &