One lab conducted a series of test tube experiments with yeast cultures to better understand how cells evolved increasing complexity.

一个实验室用酵母培养物进行了一系列试管实验，以更好地了解细胞如何进化并增加复杂性。

And the need to watch every drop of water puts all food production—yeast culture, hydroponics, chemavit, everything—under the strictest surveillance.

由于需要监控每一滴水，所以所有的食品生产——酵母培养、水培、chemavit 等等——都处于最严格的监控之下。