The most successful groups of land plants are those that evolved methods of fertilized sex cell dispersal that are independent of water and structures that protest developing embryos from drying out.

最成功的陆生植物群体是那些进化出了受精性细胞散布方法的群体，这些方法不依赖于水和防止发育中的胚胎干涸的结构。

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We were raised on books and computers, highways and cell phones, but now we were living in a village without running water or electricity.

我们在书本、电脑、高速公路和手机的陪伴下长大，但现在我们生活在一个没有自来水和电的村庄。

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It is powered by a hydrogen fuel cell that generates water as the final mechanical waste and can be collected in a holding tank for later use.

该款车动力来源是氢燃料电池，电池产生水并被作为回收物储存在一个存储器内以备之后使用。

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It can't enter cells because it's too big and it's too water soluble so it can't go through cell membranes.

它的分子太大了所以无法进入细胞,而且还是水溶性的,所以它也无法穿过细胞膜

耶鲁公开课 - 生物医学工程探索课程节选

So inside the cell mostly water, outside the cell mostly water, but I need to separate my water from the water outside.

那么细胞内大多是水,细胞外大多也是水,但我需要将体内的和体外的水隔离开

耶鲁公开课 - 生物医学工程探索课程节选

There's lipid chains in between so cell membranes are lipid rich layers that can exist in water.

脂质链在两者中间,所以细胞膜是富含脂类的膜层,并可以稳定存在于水中

耶鲁公开课 - 生物医学工程探索课程节选

The only emissions from the fuel cell itself are water and waste heat, which can be captured and put to use.

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It can be used to run an internal combustion engine in a car or power one using a fuel cell, with heat and water as the only emissions.

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