| 单词 | 水密 |
| 释义 | 〔suberin〕A waxy waterproof substance present in the cell walls of cork tissue in plants.软木脂：植物木栓层中细胞之间细胞壁中的一种蜡状水密物质〔watertight〕So tightly made that water cannot enter or escape.水密的：制造之紧密以致水无法进入或漏出的〔cofferdam〕A temporary watertight enclosure that is pumped dry to expose the bottom of a body of water so that construction, as of piers, may be undertaken.围堰：一种临时性的水密围绕物，抽干后露出水体的底部，以便对建筑物（如桥墩）施工 |
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