当小强爬过这些线的时候，粉笔的粒子就会像碎玻璃一样划过它们，很快它们就会死于脱水。
When cockroaches cross these lines, the particles of the chalk will cut them like broken glass, and they’ll soon die of dehydration.
膏状和凝胶状牙膏通常含有一些像甘油这一类能够防止牙膏脱水的物质。
Paste and gel formulations often contain substances like glycerol to prevent the toothpaste from drying out.
像起床后不叠被子这种简单的事情，能除去被子里和床上的水分，螨虫会因此脱水而死。
Something as simple as leaving a bed unmade during the day can remove moisture from the sheets and mattress so the mites will dehydrate and eventually die.
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