450. at the mercy of (=in the power of) 任…擺布, 在…支配下

449. mention sth. to sb. 向某人提起某事

448. on the mend (=in the process of recovering) 好轉(zhuǎn), 在康復(fù)中

447. on memory of 為紀(jì)念…

446. by all means (=at all costs)不惜一切.

(=certainly) 當(dāng)然行;by means of用…; by no means 完全不, 決不

445. as a matter of fact 實際上, 事實是

444. major in 主修(某課程)

443. (be) at a loss 不知所措

442. in the long run (=in the end)從長遠(yuǎn)來說,最后; in the short term (從短期來說)

441. before long (=soon)不久, 過了不久以后.