24.　 decrease by 下降了……

decrease (from …) to (从……)下降到

23.　 carry out 执行

22.　 in the years ahead 今后一些年里

21.　 up to 多达; 比得上

20.　 heat up 受热

19.　 come about 发生(不及物)

come across偶遇;穿过

come back回来

come down降下;减低

come in进来;到达

come out出来;出版

come up上来;被提出讨论;发芽

come up with追上;赶上

come to 结果达到;苏醒

18.　 compare…to.../compare….with 与…相比

17.　 on the whole 大体上

16.　 glance at… 很快地看……一眼..

15.　 and so on 等等