390. improve in (=get better) 有改進(jìn), 好些

389. improve sth.(make sth. better)把原物改進(jìn)

improve on(=produce or be sth. better than…) 另做一物比原物更好

388.under the impression that有..的印象,認(rèn)為

387. make (leave) an impression on sb. =give sb. an impression 給…留下印象

386. impress…on 給…留下印象

385. impose…on 把…強(qiáng)加給

384. (an) impact (on) 對…的強(qiáng)烈影響

383. be ignorant of ( = lacking knowledge) 對…不了解,不知道

382. in ignorance of 不知道…

381. be identified with 被視為與…等同