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。
During diapause, a young kangaroo stays in the female's pouch and growth of a second fertilized egg inside the uterus is delayed.
就在他即将失去知觉时，他听见微弱的叫声，循声看去，他看见一只小袋鼠从妈妈的育儿袋掉下来。
Just as he was losing consciousness, he heard a faint squeak and looked down to see a baby wallaby that had fallen from its mother's pouch.
澳大利亚悉尼塔瑞噶野生动物园中，一只五个月大的红颈小袋鼠从妈妈的育儿袋里探出头来。
A five-month-old red-necked wallaby joey pokes her head out of her mother's pouch at Taronga zoo, Sydney, Australia
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