我为我的旅行买了一台一次性相机，这样我就不用担心损坏昂贵的相机了。

I bought a ___disposable camera for my trip, so I wouldn't have to worry about damaging an expensive one.

许多人发现一次性剃须刀比电动的更适合旅行时使用。

Many people find ___disposable razors to be more convenient for travel than electric ones.

越来越多的城市正禁止使用一次性塑料餐具以减少环境浪费。

An increasing number of cities are banning ___disposable plastic cutlery to reduce environmental waste.