1.puzzle n. 难题；（字、画）谜 vt. 使迷惑
例句：He was a puzzle.
他是个谜。
2.pursue v.追求；继续；追赶
例句：She pursued the man who had stolen a woman's bag.
她追赶那个偷了一个妇女提包的男人。
3.pump n.泵;打气筒; vt.注入;抽水; vi. 抽水；给…打气;
例句：There is a pump in the courtyard.
4.refine vt. 提炼;改善;使高雅
例句：Works of taste can refine the mind.
5.refer vi. 谈到，提到；涉及
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例句：There is a pump in the courtyard.
庭院里有个水泵。
I tried to pump up my back tyre.
我试图给后胎打气。
例句：Works of taste can refine the mind.
高雅的作品能陶冶心灵。
例句：I promised not to refer to the matter again.
我答应过再也不提这事了。
