copper-bottomed
短语a. （船）底包铜皮的
发音
AU
词形变化
more copper-bottomed
比较级
most copper-bottomed
最高级
别名
copperbottomed
释义与例句
adj.
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1.
Having lower parts made of or covered by copper.
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2.
Thoroughly reliable; secure.
习语The copper-bottomed angel at Messrs. Paff’s in Broadway.
词汇关系
近义相关 1
词源
From the copper sheathing applied to the bottom of a wooden ship to prevent damage from marine organisms. In literal sense 18th century, in figurative sense attested since at least 1807. The British idiomatic use comes from the fact that with Britain being a major naval power, there was always a ready market for copper in ship construction, making it a reliable commodity to invest in.
来源：wiktionary