慢速英语:Bladeless Wind Generator Safe for Birds

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短语讲解：

1. Birds and bats sometimes fly into them and are killed.

fly into 飞进; 突然迸发
例句：Birds cause damage when they fly into engines.
鸟儿如果冲撞到引擎上就会造成损坏。

2. He also said he wanted it to quick to set up.

set up 建立
例句：They set up many branches throughout the country.
他们在全国建立好多分公司。

3. It is made from the same material as other generators.

be made from 由…所做成的（用于原材料不易看出的场合）
例句：The injection is made from Chinese herbs.
这种针剂是由中草药提炼的。

4. Wind causes the mast to oscillate, or move back and forth.

back and forth 来回地; 一来一往
例句：Two small boats ferry people back and forth.
两只小船往返为人摆渡。