an airtight defense
严密的防御
以上为机器翻译结果，长、整句建议使用 人工翻译 。
The team had an airtight defense.
该队防守滴水不漏。
youdao
You must set up an airtight base defense immediately, blocking the two base access roads at their chokepoints (2 and 3) and putting defense on the high ground overlooking both chokes.
你必须建立一个密闭的基地防御，挡住了两个基地在敌军的阻塞点(路2号和3号)、临河高地的防守上都化油器。
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