hills covered with pinetrees; 青松覆盖的山峦
The ground was covered over with thick snow. 地上覆盖着厚厚的积雪。
two-sheeted covering; 双叶覆盖
tree coverage 树木覆盖率
牛津高阶第八版
美国韦氏词典
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维基百科 (自由的百科全书)