Daily Vocabulary(2007/08/29)

4476.jack up(～をジャッキで持ち上げる、押し上げる、料金つり上げる、引き上げる、値上げする）
It's disgraceful how the airlines jack up fares during the Christmas season.
4477.fad(一時的流行、～熱、流行のもの）
Wearing platform shoes was a fad among young girls.
4478.intrude into(～侵入する、侵害する）
Economic theory has intruded into the political process.
4479.off the top of one's head(思いついて、思い付きで、即席で）
I can't answer that question off the top of my head.
4480.cadre(幹部、中核）
A cadre of management troubleshooters will start working to dispel unrest among workers after the merger is compleated.
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