三月的第一天，她坐在一个角落里翻看着生物课本。一个阴影像暴风云一般遮挡住了她的桌子。而这个暴风云正是安德烈。
On the first day of March, she sits in a corner with her biology textbook. A shadow comes over her table like a stormcloud. The stormcloud is Andre.
洞壁上可以看到好几种岩层，用这个教地理生动有趣。 而且我们不需要生物课本，我们的山洞学校里每天都能看到蝙蝠、蜥蜴。
We had the best choir in the area and there were also several rock strata visible on the walls which made teaching geology far more interesting.
肖斯塔克指出，尽管中学生物课本中将新陈代谢和繁殖能力作为生命的必要条件，但是我们仍然很容易想起不符合这些规律的事物。
Shostak points out that while most high-school biology textbooks include as requirements for life the ability to metabolize and reproduce, it's easy to think of things that break these rules.
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