1. They were in time to produce carbon dioxide, nitrogen, water vapour and other gases. 最终产生了二氧化碳、氮气、水蒸气和其他多种气体。 They were followed in time by land animals. 随后,陆地上出现了动物。
in time after a period of time when a situation has changed 经过一段时间后,最后,终于