441. before long (=soon)不久, 過了不久以后.

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

　　443. (be) at a loss 不知所措

　　444.major in 主修(某課程)

　　445. as a matter of fact 實際上, 事實是

　　446. by all means (=at all costs)不惜一切. (=certainly) 當然行;by means of用…; by no means 完全不, 決不

　　447. on memory of 為紀念…

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

　　449. mention sth. to sb. 向某人提起某事

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

　　451. be in a mess 亂七八糟, 處境困難 make a mess of 弄亂, 打亂

　　452. bear(or keep)…in mind(=remember)牢記

　　453. bring(or call)to mind(=remember)使回想起

　　454. by mistake(由于粗心,健忘原因而)錯誤地

　　455. at the moment (=now) 此刻,現在 for the moment (=for the time being)暫時 just a moment 稍等片刻 at the last moment 在最后一刻

　　456. in the mood for 有情緒去做..,有心境做.

　　457. no more…than 和…一樣都不…

　　458. for the most part 多半,大多數,一般來說

　　459. at (the) most 最多, 至多

　　460. make the most of 充分利用