对这群疯子一次足够了。

Once is enough for this crazy stuff.

youdao

像大多数强壮男子一样，我认为一次足够。

Like most macho men, I believed that once was enough.

youdao

一次足够大的火山爆发能够令数百万立方吨的气体和灰烬上升到大气层。

A large enough volcanic eruption can cause millions of cubic tons of gas and ash to be sent high into the atmosphere.

youdao

You have to inject it multiple times because the first blip that you get in immune response is not very high, you have to boost and often you have to boost again in order to get a high enough response to be protected.

你必须得进行多次注射,因为第一次注射,无法使免疫系统产生强烈反应,你得要增强免疫,通常还得再增强一次,以使反应足够强烈,从而起到保护作用

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