(of an object)designed to be used only once and then abandoned or destroyed
(实物)只用一次的,一次性的
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the need for unmanned and expendable launch vehicles .对不载人、使用一次即毁弃的运载工具的需求。
of little significance when compared to an overall purpose, and therefore able to be abandoned or allowed to be killed or destroyed
(对全局来说)无足轻重的;可以放弃(或牺牲、摧毁)的
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the region is expendable in the wider context of national politics .从更大范围的国家政治面来看,该地区是无足轻重的。