sirenians

与sirenians相关的网络例句 [注：此内容来源于网络，仅供参考]

The first Sirenians appeared in the early Eocene in Europe, but by the close of this epoch, they had spread to tropical Asia and North America.

早在第一次出现海牛 Eocene 在欧洲，但这个时代的结束，他们分布在热带亚洲和北美洲。

Perrin W F and Myrick A C. Growth of odontocetes and sirenians: International Conference on Determining Age of Odontocete Cetaceans and Sirenians.

假设按照一个生长层组代表半年来计算，我馆饲养的此白鲸的年龄则在17岁左右，这与该白鲸的身体特征明显不符。

They may live more than 70 years. For more information about Sirenians, try Animal Diversity Web.

可多活70年。更多关于避难所，尽量动物多样性网。

Sirenians are slow and passive mammals of tropical and sub-tropical waters.

海牛是缓慢和被动哺乳动物热带和亚热带水域。

Sirenians are solitary creatures, who come together only to mate, or when favorable local conditions attract individuals for a short time.

海牛是孤独的动物，他们走到一起，只偶或在当地的有利条件，吸引个人进行了短暂的时间。