（……）+by是袖手旁观的意思?麻烦帮填一下,
问题描述：
（……）+by是袖手旁观的意思?麻烦帮填一下,
答
stand by 坐视不理；袖手旁观
The police just stood by and watched as the missiles rained down on us.
当投掷物雨点似的落到我们头上时,警察只是袖手旁观