当一只昆虫与它们擦身而过时，就会触发一种微小的电荷，电荷沿着树叶里的隧道向下移动，并打开泪液细胞膜上的小孔。

When an insect brushes against them, this triggers a tiny electric charge, which travels down tunnels in the leaf and opens up pores in the tear's cell membranes.

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在神经细胞膜上激发微小电荷的化学过程导致了大部分脑部电流的活动。

The chemical process that triggers tiny charges in the membranes of neurons causes much of the brain's electrical activity.

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克罗宁称，我们可以抽吸质子分布在细胞膜上，来设置形成一个质子坡度。

"We've [also] got an indication that we can pump protons across the membrane" to set up a proton gradient, says Cronin - another key stage in harnessing energy from light.

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They go across the membrane - this is the trans-membrane part of the receptor that's going across the membrane.

它们跨越式的存在于细胞膜上,这就是受体的跨膜部分,它跨越了细胞膜

耶鲁公开课 - 生物医学工程探索课程节选

I mentioned earlier, we thought about receptors as being these blocks and membranes but there are different families of receptors.

我之前讲过,我们把受体看做一类,固定在细胞膜上的分子,但受体有许多不同家族

耶鲁公开课 - 生物医学工程探索课程节选

Essentially, what they are is it's a protein that spans the membrane of a cell.

本质上来说，它是一个横跨细胞膜的蛋白质。

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