They were always too big for me, but I knew in my heart, that it was Mommy's jeans that help me be the best Mommy that I could be.

VOA: special.2009.04.27

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 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