Rack one's brains
辅助 Assistant绞尽脑汁
🧩 词语组成解析
rack
[ræk]
n. 行李架;支架;刑架;（羊、猪等带前肋的）颈脊;
vt. 使痛苦，使焦虑;剥削，榨取;用刑拘折磨;
a. 人们的；自己的
n. 智力, 脑髓\\n[法] 智能, 智囊
🗣️ 情景例句
Thank you.
谢谢。
It's up to you.
一切由你决定。
The child learning to see, first distinguishes only two-dimensional shape;
正在学看东西的儿童起初只会分辨二维形态，