stand up 站立;起立;站起来;（要求或证据）经得起检验，能够成立;（男友或女友）爽约，放…的鸽子

【例句】
Everyone would stand up when the teacher entered the classroom.
老师走进教室时大家都会起立。

I'm afraid this document will never stand up in a court of law.
恐怕这份文件在法庭上是根本站不住的。