| 词汇 |
advance guard |
| 释义 |
advance guard noun /ədˌvɑːns ˈɡɑːd/ /ədˌvæns ˈɡɑːrd/ (also advanced guard) [countable + singular or plural verb]- a group of soldiers who go somewhere to make preparations before other soldiers arrive先遣部队
- (figurative) White blood cells may be considered the advance guard of the immune system.白细胞可能被认为是免疫系统的先遣卫队。
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