covering [ˈkʌvərɪŋ]

以下由轻松背单词网站提供

附加级

n.掩蔽物，遮盖物v.覆盖( cover的现在分词)

a thick covering of snow on the ground 地上厚厚的一层积雪
We gave him covering fire as he dashed across the clearing. 我们用火掩护他冲过空地。来自《简明英汉词典》