mildew

霉、霉斑

There was black mildew growing along the bathroom tiles.

浴室磁砖缝隙长出了黑色的霉斑。

白粉病、霉害植物病害

Powdery mildew ruined most of the grapes this season.

白粉病毁了这一季大部分的葡萄。

发霉、长霉

The towels will mildew if you leave them in the bag.

毛巾如果一直放在袋子里就会发霉。