But to refresh your memory: in 1952 Stanley Miller and Harold Urey simulated the conditions of early Earth by sealing water, methane, ammonia and hydrogen in a glass flask.

1952年，斯坦利·米勒(Stanley Miller)和哈罗德·尤里(Harold Urey)模拟了早期地球的情况，他们将水、甲烷、氨气和氢气密封在一个玻璃烧瓶中。

You surely encountered this in a science textbook at some point--but to refresh your memory: in 1952 Stanley Miller and Harold Urey simulated the conditions of early earth by sealing water, methane, ammonia, and hydrogen in a glass flask.

你肯定科学课本上见过它，不过为了唤起回忆还是说一下：1952年，Stanley Miller 和Harold Urey 将水、甲烷、氨气和氢气封如玻璃烧瓶内，来模拟地球早期的情况。