豚

Two major news about whales and dolphins concerned about the captivity issue.

七月份两宗重要的鲸豚新闻都涉及饲养问题。

The number of dolphins in China is on the decline.

我国白当豚的数量在不断下降。

Also, the seismic waves used to find oil harm aquatic mammals and disorient whales.

同时侦测油源的震波也对海洋哺乳动物造成伤害或使鲸豚惊慌失措。

The species ranged from tiny field mice to the 100 - pound capybara from Brazil.

物种范围从很小部分的老鼠到产自巴西的100磅重的水豚。

Until recently, the emergence of whales was one of the most intractable mysteries facing evolutionary biologists.

直到最近， 鲸豚类的起源仍是个令演化生物学家棘手的问题。