391.improvement in表示原物有改进,好转
392.include……in把……列在……里面
393.inclusive of把……包括在内
394.independent of独立的,不受约束的
395.indicative of表明,说明
396.be indifferent to (=not interested in)对……漠不关心,冷淡,不在乎
397.(be) inferior to (=less good in quality or value)比……差;superior to比……好
398.inform sb. of sth.通知,告诉
399.be innocent of无罪的,无辜的
400.insist on (=order sth. to happen)坚持要