It's encased within a membrane, a cell membrane which we talked about the structure of.

都是膜包围细胞器,我们刚讲过其结构的那种膜

耶鲁公开课 - 生物医学工程探索课程节选

So they like to be in the membrane and they're stable there and they won't come out because their structure allows them to exist in these unique spaces.

所以它们在膜里稳定存在,而且也不会脱离膜,因为这些蛋白质的结构使其能存在于,磷脂双分子层这个独特的环境中

耶鲁公开课 - 生物医学工程探索课程节选