pick up的五个意思为：

1、捡起。

2、(贸易、经济) 改善。

3、收拾。

4、学会。

5、逮捕。例句：He picked his cap up from the floor and stuck it back on his head.他从地板上捡起帽子，重新戴在头上。

一.pick up意为：“捡起、拾起”。例如：-There is a pencil and two erasers on th floor.有一支笔和两块橡皮在地上。-They're mine.Could you help pick them up for me.是我的，你能帮我捡起来吗？二.pick up意为“学会”，此时指偶然、无意间学会的。例如：I picked up English when I studied in England three years ago.三年前，我在英国留学生无意间学会了英语三.pick up意为“接（人/物），此时含有主动、有责任去接的意思。”例如：I'll free at 8 o'clock.So you can pick me up at that time.我八点将会有空，所以你可以那时候来接我。

四.pick up意为“停下来让某人搭乘（车/船）”此时主观接与不接的意愿较强。例如：My neighbor is so kind. She stopped to pick up my son yesterday on the way home.我的邻居特别善良。昨天她在回家的路上顺道带我儿子回家。