如果還有疑問，可以直接免費(fèi)咨詢常州環(huán)球雅思：15380059678（微信同號），了解相關(guān)的的雅思托福、各種英語培訓(xùn)等課程喲！��！

1. in turn

大多數(shù)同學(xué)會理解為 “反過來”，認(rèn)為前后語義是對立的，但實(shí)際上閱讀中也可能表示順接關(guān)系，翻譯為“接著會…（發(fā)生）…”

The conventional theory is that people yawn when bored or sleepy because yawning raises blood oxygen levels, which in turn raises alertness.

2. account for

大家背四級單詞時更多的理解為 “（比例上）占…”的含義，實(shí)際上account for還有“解釋，說明……”這個意思。

Heavy rain accounts for most of the water that enters into lakes.

Scientists will not be able to account for climate changeover the past century until they learn more about the urban heat island.

3. precipitation

這是個話題詞匯，大多數(shù)文章中翻譯為 “沉淀”，不過也有“降水”的意思。

Ordinary meteoric water is water that has soaked into the ground from the surface, from precipitation （rain and snow） and from lakes and streams.