hold up既有支持又有阻挡的意思,怎么分辨?

一般来说,分辨有歧义的单词或词组必须从语境和上下文开始
尤其是 hold up
hold up 有很多意思：
举起,托起,抱起来,支持,阻挡,承受,忍受,等等
请看例句：
Please hold up the book and show it to the class （举起）
The woman holds up the baby to stop him crying （抱起来）
Women can hold up half the sky （支持,撑起）
Mike seems to be holding up under pressure （承受,忍受）
Get out of my way. You're holding me up. I have a plane to catch. （阻挡,耽误）