B2 劣质的；无用的
to be of low quality or not useful
Shoes are no good if they let in water. 鞋子如果透水的话就太差了。
Food aid isn't much good until the fighting stops. 在战斗停止之前，食物援助是没有太大用处的。
"How about this bag?" "That's no good - it's too small."
The software isn't much good either.
It's a nice warm jacket but it's no good when it's raining.
This oil works well in salad dressings but it isn't any good for frying.
See also: good adjective (SUCCESSFUL)