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首页英语词典vanguardvanguard考试真题

vanguard

英 ['vængɑːd] 美['vænɡɑrd]

vanguard的意思英英释义考试真题实用场景例句

先锋盾
n. 前锋科学卫星

考试真题

It might seem surprising to think about an item staying in space for that long, but the oldest satellite still in orbit—Vanguard 1—turned 60 in 2018.