adj.(破得或差得)不能使用的，破烂不堪的

The software is completely unusable due to frequent crashes and bugs.
这款软件因为经常崩溃和存在漏洞，完全无法使用。
The old computer is practically unusable, it takes ages to boot up.
这台旧电脑几乎不能用了，启动起来要花很长时间。
The damaged camera lens makes the photographs unusable.
损坏的相机镜头使得拍摄出来的照片无法使用。
The road after the storm is unusable for vehicles; we have to walk.
暴风雨后的道路对车辆来说已经无法通行，我们只能步行。
The broken chair is unusable until it's repaired or replaced.
这把破椅子修好或替换之前都无法使用。
The corrupted hard drive contains unusable data, causing significant loss.
受损的硬盘上的数据无法读取，造成了重大损失。
The outdated map is unusable for navigation in the modern city.
这份过时的地图在现代城市中无法用于导航。
The phone with a cracked screen is practically unusable for making calls.
屏幕破裂的手机几乎无法用来打电话。
The spoiled food in the fridge is now unusable; it needs to be thrown away.
冰箱里变质的食物现在无法食用，需要扔掉。
The broken pencil with no lead is unusable for writing or drawing.
铅芯断掉的铅笔无法用于写字或绘画。