围堤的英文：
a coffer; a cofferdam

coffer是什么意思：
n. 保险箱,金库潜水箱
vt. 装箱

Failures to prohibit unauthorized departmental coffers repeatedly.
各种“小金库”屡禁不止。

Airports, now the travel centres of the USA, are comfortable, hospitable places, with coffer shops, bars and spotlessly clean restrooms.
机场作为美国旅行的中枢，配备了购物，酒巴和无污染休息室，即舒适又周到。

cofferdam是什么意思：
n. 围堰;潜水箱