layer [ˈleɪə(r)]以下由轻松背单词网站提供
单词级别第3级基本释义adj.层,层次英英释义a level of material , such as a type of rock or gas , which is different from the material above or below it, or a thin sheet of a substance参考例句These seeds must be covered with a layer of earth. 这些种子必须盖上一层泥土。The branches are weighed down by a heavy layer of snow. 树枝都被厚雪压弯了。 推荐阅读 |