不仅如此，胎儿对自己母亲声音的识别证明他们有学习能力。
Not only that, but fetuses' recognition of their mothers' voices proves that fetuses are capable of learning.
一个大学文凭不单单是对你知识的证明，而且是一个学习能力的信号。
A university education serves not just to educate, but also to signal the ability to learn.
考生努力考取一个国际承认的资格来证明其语言能力并帮助他的学习和工作。
They do this to gain an internationally recognised qualification which will validate their level of language ability and help them with their studies or their work.
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