例句
Bird evolved from reptiles, so the first bird must have come out of an egg--laid by a reptile.
禽类是由爬虫类进化而来，所以，第一只禽鸟肯定是从爬虫类孵化的蛋里出来的。
Bird evolved from reptiles, so the first bird must have come out of an egg--laid by a reptile.
禽类是由爬虫类进化而来，所以，第一只禽鸟肯定是从爬虫类孵化的蛋里出来的。