英语词汇“sheet anchor”是什么意思，“sheet anchor”的读音、用法及例句翻译-烛光网

词汇	sheet anchor
释义	sheet anchorn.（名词） Nautical A large extra anchor intended for use in an emergency.【航海】备用锚：在紧急状态下使用的大型备用锚 A source of aid in time of emergency or danger.最后的依靠：在紧急情况或危险时使用的救援物
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