The mosquito-curtain was never put down at the lunch break, but mother put it down that noon.

从不在午休时间放下的母亲的蚊帐，那天中午是放下的。

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Even if a mosquito somehow managed to penetrate such a barrier, a second light curtain set up around a bed, for example, would provide further protection.

即使蚊子能穿过一道此类屏障，第二道光幕，比如说设立在床周围，会提供进一步的保护。

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Dr Marka calculates that if there is a 6% chance that a mosquito will penetrate a light curtain, and a hut contains four curtains, then only one in 100,000 mosquitoes will be able to spread malaria.

马尔卡博士估算假如一只蚊子有6%的机会穿过光帘幕，并且一个草屋设有四道帘幕，那么在一百万只蚊子中仅有一只有机会能够传播疟疾。

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