be covered with mildew
用被动结构描述物体表面布满霉斑。
The bathroom walls are covered with mildew.
浴室的墙上长满了霉。
霉；霉菌
mildews — plural of mildew
霉变；发霉；霉变过程；一种在有机物表面产生(通常为白色)生长的真菌
A fungus that forms a whitish, powdery or webby growth on damp or decaying organic matter.
A growth of minute powdery or webby fungi, whitish or of different colors, found on various diseased or decaying substances.
霉变过程
the process of becoming mildewed
一种在有机物表面产生(通常为白色)生长的真菌
a fungus that produces a superficial (usually white) growth on organic matter
The damp basement had a strong smell of mildew.
潮湿的地下室有一股浓烈的霉味。
用法提示：此处 mildew 作为名词，指霉味或霉菌本身。
You need to remove the mildew from the shower curtain.
你需要清除浴帘上的霉菌。
用法提示：此处 mildew 作为名词，指霉菌这种物质。
Mildew started to grow on the wooden fence after the rainy season.
雨季过后，木栅栏上开始长霉。
用法提示：此处 mildew 作为名词，指霉变现象或真菌生长。
用被动结构描述物体表面布满霉斑。
The bathroom walls are covered with mildew.
浴室的墙上长满了霉。
强调霉在特定条件下滋生，通常与潮湿环境相关。
Mildew grows on damp surfaces.
霉会在潮湿的表面上生长。
mildew 常指白色粉状或网状的霉菌，而 mold（英式拼写 mould）是更广泛的霉菌总称；日常口语中常可互换，但科学或园艺语境中 mildew 特指某些专性寄生真菌。
grammar · medium
易错句子There are mildews on the bread.
正确表达There is mildew on the bread.
mildew 在表示“霉斑、发霉”这一物质或现象时通常作不可数名词，不能用复数 mildews；应使用单数形式，谓语动词用 is。
grammar · medium
易错句子The bread is mildew.
正确表达The bread has mildew on it.
mildew 是名词，不能直接放在 be 动词后作表语表示“发霉的”；要表达“面包发霉了”，可说 The bread has mildew on it，用 have 表示“上面有霉”。
白粉病
The roses have powdery mildew again this year.
今年玫瑰又得了白粉病。
霜霉病
Downy mildew spread quickly through the wet vineyard.
霜霉病在潮湿的葡萄园里迅速蔓延。
霉味
There was a musty mildew smell in the old shed.
旧棚屋里有一股发霉的气味。
霉斑
The mildew stains on the ceiling were hard to remove.
天花板上的霉斑很难去除。
除霉剂
Use a mildew remover to clean the bathroom tiles.
用除霉剂清洁浴室瓷砖。
霉菌滋生
Good ventilation helps prevent mildew growth in the bedroom.
良好的通风有助于防止卧室里滋生霉菌。
mildew 是真菌的一种，属于同一生物类别。
mildew 通过孢子繁殖和传播。
潮湿环境是 mildew 生长的主要条件。
mildew 常使物体产生这种气味。
Dictionary facts from ECDICT, WIKTIONARY.