The biggest concern was that the ice airstrip might break apart,大家最担心的是冰面上的飞机跑道可能也破裂了

break apart:分裂, 自行裂开

The partnership has broken apart.

那合作经营已散伙了。

It just broke apart in my hands.

它在我手上自行裂开了。

masses of water start to flow again,大量的水再次流动

masses of:大多数, 大部分

There were masses of dark clouds in the sky.

天上有朵朵乌云。

After harvest we will have a mass of rice.

秋收后，我们将获得大量稻谷。

everyone was able to evacuate when the weather improved.天气好转的时候所有人都得以疏散。

be able to:会, 能

t took him three months to be able to run a mile.

要能跑一英里需要他三个月。

We hoped that we should be able to do that.

我们希望我们能这样做。