重点讲解:
1. even if 即使;尽管;纵然;
例句:Her idea is fundamentally sound, even if she says silly thing sometimes.
即使她有时说些傻话,她的想法基本上是好的 。
2. for sure 无疑;肯定;
例句:No one knows for sure how people first learned to preserve food.
没有人确切地知道当初人们是如何学会保存食物的 。
3. be filled with 布满;使遍及;
例句:The hall was filled with choking clouds of smoke.
大厅里充满了使人窒息的烟雾 。
n. 屏,幕,银幕,屏风
v. 放映,选拔,掩