249. to knock it out of the park: 表现卓越 250. at loggerheads with: 势不两立/水火不容 251. way above one's head: 高深莫测/难以捉摸 252. to hammer something home: 反复强调 253. to hang in the balance: 前途未卜/悬而未决 254. to hold one's nerve: 坚定不移/不卑不亢 255. at ...