During diapause, a young kangaroo stays in the female's pouch and growth of a second fertilized egg inside the uterus is delayed.

在滞育期间，小袋鼠呆在雌袋鼠的育儿袋里，因而推迟了子宫内第二个受精卵的发育。

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While some air can bubble out the open end, the majority of it stays inside, in the same way air stays in the upside down glass.

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