大学英语：重要词汇fill out(=fill in)填写

317.set the world on fire=set the flames on fire(=do sth. remarkable)有突出成就

318.play with fire(=take great risks)干冒险事

319.set sth. on fire(=set fire to sth.)使..着火，放火

320.at first sight(=when first seen)乍一看，一见

321.for the first time 第一次 (作状语)

322.in the first place 首先，第一

323.fit into 刚好放入

324.fit in with(=suit，fall into agreement)合适，相配，一致

325.(be)fit for(=right and suitable for)适合

326.focus on(=concentrate on)集中在…上;focus sth. on把…集中在…上