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1.unpleasant adj.使人不愉快的；不合意的
The aeroplane was gyrating about the sky in a most unpleasant fashion.
飞机在空中盘旋，令人不堪忍受。
2.replacement n.代替；归还，复位；替代者
Hormone replacement therapy is very important and should be instituted early.
激素替代治疗非常重要，应该及早开始。
3.harden vt.使硬化
The varnish takes a few hours to harden.
清漆需要几个小时才能干透。
4.injection n.注射；注射剂
It has to be given by injection, usually twice daily.
它必须通过注射摄入，通常一天两次。
5.regular adj.有规律的；规则
George struggled wildly, going under and resurfacing at regular intervals.
乔治疯狂地挣扎，不断在水面上浮浮沉沉。
6.note vt.指出
The report notes that export and import volumes picked up in leading economies...
报告特别指出经济大国的进出口量攀升。
