珠海科技学院：《英语精读》课程教学课件（Book 1）Unit 5 Angels on a Pin

with the aid of 借助于，通过.的帮助 With the aid of a hammer,he opened the door

with the aid of 借 助 于, 通 过. 的 帮 助 With the aid of a hammer, he opened the door

Barometer 气压计 9 obs bab上a

Barometer 气 压 计