4周搞定2000+托福核心词
遮盖物；遮盖层v. [cover] 的现在分词；遮盖
covering
常考释义
The seed has an outer coating that surrounds the genetic material of the new plant, and inside this covering is a concentrated supply of nutrients.
种子有一层裹在遗传物质外面的表皮，在表皮里面是一种浓缩了的营养物质。
来源于：阅读OFFICIAL9 P3n. 一层
Buy steaks with a thin covering of fat.
买些带有薄薄一层脂肪的牛排。
n. 覆盖物；遮盖物
Sawdust was used as a hygienic floor covering.
锯屑曾被用来铺在地面上保持卫生。
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