The young hotshot lawyer always interrupts others during meetings, thinking he knows everything.

hotshot 是复合词，由 hot（热的、激烈的）和 shot（射击）组成，原指"神枪手"或"快枪手"。在现代英语中常用来形容"自命不凡、自以为是的成功人士"，带有一定贬义色彩，暗指这个人虽然能力出众但态度傲慢。