insurance against 保护性措施；免疫力的；保险体系；陆上运输保险 例句 1. The country needs a defence capability as insurance against the unexpected.国家需要有一定的防御能力，以应对不可预知的情况。2. A business needs insurance against risks such as fire and flood.公司需要上保险以防备火灾...
insurance against什么意思及同义词
