南美洲产的一种水栖动物

A large semiaquatic rodentof tropical South America,having short limbs and a vestigial tail and often attaining lengths of more than1.2meters4feet.

水豚一种巨大的半水栖啮齿动物，产于南美洲的热带地区，四肢短小，尾已退化，身体长达1.2米4英尺

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候，里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色，卵在发育96h后卵基本全部孵化。