adj.可牺牲的，可消耗的，可毁灭的
n.(战争中的)消耗品

The rockets used in space launches are typically expendable, meaning they burn up during re-entry.
空间发射所用的火箭通常是消耗性的，意味着它们在再入大气层时会燃烧殆尽。
The coffee cups provided by the café are single-use and therefore expendable.
咖啡馆提供的咖啡杯是一次性的，所以用完就可以丢弃。
In the movie, the expendable characters were killed off early to advance the plot.
在电影中，那些可有可无的角色很早就被写死了，以推动剧情发展。
The company's budget for office supplies is limited, so we must view paper as expendable.
公司的办公用品预算有限，所以我们必须把纸张看作是可以消耗的资源。
The astronaut had to jettison the expendable cargo module to save fuel.
宇航员不得不抛弃那个一次性使用的货物模块来节省燃料。
The batteries of my remote control are expendable and need to be replaced regularly.
我遥控器的电池是消耗品，需要定期更换。
In war, soldiers are often seen as expendable resources by their commanders.
在战争中，士兵往往被指挥官视为可牺牲的资源。
The plastic straws provided with drinks are now considered environmentally expendable.
以前随饮料提供的塑料吸管现在被认为是不环保的，可以丢弃的。
The old computer was deemed expendable when we acquired the new, more efficient model.
当我们购入新的、更高效的电脑模型时，旧电脑被认为是可以淘汰的。
The experimental satellite was expendable, designed to disintegrate after completing its mission.
实验性卫星是一次性的，设计为完成任务后就会解体。