Definition (质量)
To be of poor quality or not useful; lacking the necessary attributes for a specific purpose.
品质低劣的；没有用处的
This umbrella is no good; its frame is too flimsy.
这把伞没用，它的骨架太脆弱了。
This old oven is no good anymore; it's completely broken down.
这台旧烤箱已经没用了；它完全坏掉了。
This light jacket is no good in this kind of weather.
这件薄外套在这种天气里没用。