江豚；淡水豚

river dolphins───江豚；淡水豚

river basin───[水文]流域

river fishing───河里捕鱼

the Dolphin───海豚

silver dollars───银元

driver education───驾驶员教育

Godolphin───戈多尔芬（姓氏）

River Nelson───尼尔森河

dolphin───n.海豚；n.(Dolphin)人名；(英)多尔芬

Ganges river dolphin is also in grave danger; only a few thousand remain, and they live in some of the most polluted rivers on Earth.───恒河河豚也是岌岌可危。 现仅存数千头，生活在地球上污染最严重的水域。

The greatest threats to Marine mammals are being caught in fishing nets or being struck by shipping vessels, although for the Yangtze river dolphin, pollution is a major contributor.───虽然长江豚的灭绝主要是因为水源污染，但对海洋哺乳动物来说，面临的最大威胁是深陷鱼网或被渔船捕获。

of oil from river dolphin fat sit alongside oil from anacondas and crocodiles.───粉红海豚脂肪制成的油被装在罐内，与森蚺油、鳄鱼油一起被摆摊上出售。

At up to 450 pounds and eight feet in length, the Amazon dolphin, or boto, is the largest of the four known species of river dolphin.───亚马逊河豚重达450磅，长约8英尺，是四种已知淡水豚里体型最大的一种。

According to statistics, the waters of the Yangtze river dolphin accidental death, one-third of the ship was killed propeller.───另据统计，长江下游水域中意外死亡的白暨豚，有三分之一是被轮船螺旋桨击毙的。

As China developed economically, pressure on the river dolphin grew significantly.───随着中国经济的发展，对白鳍豚的压力也越来越重。

The Ganges river dolphin is also in grave danger; only a few thousand remain, and they live in some of the most polluted rivers on Earth.───恒河河豚也是岌岌可危。现仅存数千头，生活在地球上污染最严重的水域。

It will suffer the fate of the Yangtze River dolphin, and be lost forever.───它将遭受命运的长江豚，并永远失去了。

Some developments in the studies of river dolphin phylogeny based on morphology, paleontology, and molecular biology were reviewed. 2.───从形态学、古生物学及分子系统学三个方面综述了近年来淡水豚类系统发生的研究进展。

Most river dolphins are almost blind.

The Ganges river dolphin is also in grave danger; only a few thousand remain, and they live in some of the most polluted rivers on Earth.

Like the Indus River dolphin, boto are also sought after by wealthy institutions in developed countries.

Chinese River Dolphin is a specific species of rare and valuable animal in the Changjiang drainage area.

Two charismatic animals—the Yangtze river dolphin, or baiji, and the Chinese paddlefish, a titan that once reached 7 meters in length—are down to a handful of individuals or have already gone extinct.

Jars of oil from river dolphin fat sit alongside oil from anacondas and crocodiles.

As China developed economically, pressure on the river dolphin grew significantly.

No one knows whether river dolphins were once more abundant or whether their numbers have always been low because of their restrictive and specialised habitat.

Although not closely related to other river dolphins, the tucuxi is included here because it shares a similar habitat.