Mountains and rivers can be moved, but man's nature cannot be moved.

江山易改 本性难移。

More and more of these glacier-fed rivers are merging together and burrowing through the surface.

越来越多源自冰川河流汇集并在表层下穿过。

Piranha are native to South American freshwater rivers.

食人鱼是一种原产于美国南部淡水鱼。

These fossils were deposited in a river system.

这些化石堆积在一个河流底部淤泥中。

Volcanoes, large lakes, and quickly flowing rivers traverse the land.

火山、大急河流横亘着全岛。

The boys pitched a tent by the river.

男孩子们在河边搭起了帐蓬。

The soil near the river is very fertile.

河边土壤很肥沃。

They happen to be most pronounced in risky habitats, like river valleys or gorges.

它们碰巧成为了在河谷或峡谷等危险栖息地生活最广为人知动物。”

The endless river rolls its waves hour after hour.

不尽长江滚滚来。

They take the form of ponds, streams, rivers, bogs and swamps.

它们以泊、河流、小溪、沼泽以及湿地形式存在着。

The plants are frostbitten, and the rivers are frozen.

植物都被冻伤，河流也结了冰。

One had winter we watched the river creep up the lower meadows.

有一年冬天，天气不好，我们眼看着河水浸没了地势较低草场。

Miraculously, the dove dove into the river to escape the cat.

奇迹般地，鸽子跳进河里，拯救了那只猫。

Also at risk are endangered animals like river dolphins.

而像是淡水河豚等濒危物种境况仍令人堪忧。

In summer, the rivers no longer flow.

在夏天 江河已断流。

Rivers really are the arteries of our planet.

河流就像我们星球动脉。

Heavy rains can escalate quickly and turn a light drizzle into a raging river.

暴雨形成及其迅速——刚刚还是毛毛细雨，不一会儿就已经出现急河流。

You follow a steep valley looking right down on the river below -- scary!

你会跟这一条很陡峭山谷，垂直于底下河，很恐怖！

Salmon also carry dangerous chemicals as the fish migrate between rivers and the sea.

随着鱼类在海洋之间迁徙，三文鱼也会携带危险化学品。

These are potentially lethal conditions as this atmospheric river comes through northern California.

当大气河流经加州北部时，以上这些情况都会是潜在致命因素。