sheath

To control methane emission from landfill site, one efficient method is to use biocover and biofilter to oxidate methane.

生物覆盖层和生物滤池技术是减少填埋场温室气体排放的有效手段。

a hard outer covering or skin on food.

食物硬的外层覆盖物或外皮。

The hard outer covering or integument of certain plants and animals, such as lichens and crustaceans.

甲壳某些植物或动物的硬的外层覆盖物或包裹物，如地衣和甲壳纲动物

t covered by an epidermis

整株覆盖着一层外皮

A natural outer covering, such as the fur of an animal;an integument.

覆盖物自然的外部覆被，例如动物毛皮；覆盖物

The outermost layer of cells covering the leaves and young parts of a plant.

外胚层覆盖于植物叶面和萌芽之上的最外一层细胞

To remove a cloak or cover from.

脱去外套或揭开覆盖物

an outer covering or casing.

外面的覆盖物或包装。

Material overlying a useful mineral deposit.

覆盖层，超覆层覆盖在有价值的矿石沉积物之上的物质

To cover with a thin protective layer.

覆盖以薄的保护层覆盖

To cover or surround with mulch.

覆盖用覆盖层覆盖或包围

A coating or an incrustation of filth or refuse.

污垢污物或垃圾的覆盖层或凝结物

A coating, as of syrup, applied to food

冻胶层浇在食物表面的覆盖物（如糖浆）

having a coating; covered with an outer layer or film; often used in combination.

有被覆的；覆盖有外层或薄膜的；常用于结合式。

a covering that protects the outside of a building.

保护建筑外表的一种覆盖层。

apply a thin coating of paint, metal, etc., to.

用涂料，金属等的稀少外层覆盖。

The membranous outer covering of an organ or a blood vessel.

外膜器官或血管的膜状外表覆盖物

Lacking outer covering such as scales, fur, feathers, or a shell.

外部无遮盖的缺乏外部覆盖物，如鳞、皮、毛或壳

cover sth with a layer of different material

在某物上覆盖一层另一种材料