海象

Walruses are clumsy on land but swim with fluent grace.

海象群在陆地是笨拙的但是游泳相对流畅的优雅。

Why are sea lions or walruses becoming vicious when they had been peaceful and harmless up until this time?

为什么海狮或海象原本是和平无害的，直到现在却变得凶残？

Pupil: three walruses and three polar bears.

学生：三只海象和三只北极熊。

Polar bears and walruses might be rivals in the wild, but together they now face a single danger.

在自然界中，北极熊和海象势同水火，但现在它们却要共同面对同一个威胁。

Walruses have enormous appetit es and hunt for food almost constantly .

海象拥有巨大的胃口，并且不断地寻找食物。

A sprawl of thousands of Atlantic walruses covers a haul-out site in Alaska's Togiak National Wildlife Refuge.

几千只大西洋的海象躺卧覆盖在一个拖拉---外面的场所位于阿拉斯加的Togiak国家的野生动物保护区。

Running out of steam , some walruses head for cooler waters .

一些海象逃离开来，前往更凉爽的水域。

Walruses are big, and dangerously powerful.

海象体形很大，而且非常强壮。

Walruses can reach some 11 feet (3.3 meters) in length and weigh up to 3,000 pounds (1.4 metric tons).

海象能延伸到11英尺（3.3米）长度和重量达到3000磅（1.4公吨）。

Walruses can reach some 11 feet (3.3 meters) in length and weigh up to 3,000 pounds (1.4 metric tons).

海象能长到大约身长11英尺（3.3米）和体重3000英镑（1.4吨）。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。