为了努力使其押韵，他似乎选择了进到他脑袋里的第一个词。
In his efforts to make it rhyme, he seems to have chosen the first word that came into his head.
查尔斯·达尔文是第一个描述自然选择在物种形成中的作用的人，他描写了物种形成的机制。
Charles Darwin, the first to describe the role of natural selection in speciation, wrote about the mechanisms of speciation.
他选择4月的最后一天是因为第一天是愚人节，它庆祝谎言。
He chose the last day of April because the first day is April Fool's Day, which celebrates lies.
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