pick up有拿起，提起，拾起，捡起等十几种意思

【例句】
They depend on the goodwill of visitors to pick up rubbish. 他们相信游客会自觉捡起垃圾。

The surgeon would pick up his instruments, probe, repair and stitch up again.
外科医生会拿起他的工具，探查、修复然后再重新缝合。