集中：focus on 、pay attention to
条件是：in conditions of
预先：beforehand
致力于做某事：devote oneself to doing something
从……到……范围：from......to......range
处于进退两难的境地：in a dilemma
努力解决难事：manage to settle the difficulties
理解：comprehend
使某人了解某事：gets across to somebody
总之：in a word
无论如何：in any case
迎合：cater to
感到荣幸：be proud of
养育某人：bring up somebody
代表某人：on behalf of somebody
彻底毁灭：destroy completely
开始袭击：begin to attack
把……交给：give......to......
转台：switch(这是电视、收音机的转台)
要求介入：require intervention
打字很辛苦，望楼主采纳