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

It's very water soluble and it's a big molecule, a very big molecule; it can't naturally get inside cells on its own.

它是一个水溶性极强的大分子,非常非常大的分子,质粒在自然状态下并不能自己进入细胞

耶鲁公开课 - 生物医学工程探索课程节选

If everyone else is cutting down I don't have too, and if everyone else does cut down I don't have to, I end up using hot water and driving a big car and so on.

如果大家都想减排,我没必要跟风,如果别人真的减排了又与我何干,我照样用着热水,开着大排量汽车

耶鲁公开课 - 博弈论课程节选

Until then, bottled water had mainly been sold in "big jugs and coolers" for people who didn't trust their water supply, said John Sicher, publisher of Beverage Digest.

WSJ: America's new love: Water

"The biggest message is that you don't have to take big steps to reduce your water usage, " its designer, Berlin-based Timm Kekeritz told CNN.

CNN: Green designs that don't cost the Earth

If you don't use a laptop, take a big drink of water before settling in to answer your email.

WSJ: How to Be a Better Procrastinator