rumbling adj. 隆隆响的
The rumbling thunder grew louder, and louder.
隆隆的雷声越来越大。
The earthquake began with a low rumbling sound.
地震开始时发出低沉的隆隆声。

swell v. 增长
The budget deficit could swell further over the next few years.
未来几年内财政赤字可能会有更多增长。

astride prep. 骑，跨
That pretty girl rode astride the horse.
那位漂亮的小姑娘两腿叉开骑在马上。

tangle n. 缠结的一团
The wool got in a fearful tangle.
毛线乱成了一团。

bundle n. 一包，一捆
My uncle sent me a large bundle on my birthday.
我生日时叔父给我寄来一个大包裹。
The heavy bundle bore him down.
那包东西很重，压得他直不起腰。

relieved adj. 放心的，松了一口气的
She looked immensely relieved when she heard the news.
她一听到这个消息似乎立刻放心了。
They exchanged relieved glances.
他们如释重负地彼此看了看。
She had a relieved look on her face.
她脸上现出宽慰的表情。

swarm v. 蜂拥
Many students swarm into the canteen after class.
放学后,很多学生拥进食堂。
Myriads of small marine insects swarm the ocean.
无数的海中小昆虫群集在海洋中。

jet-black adj. 乌黑发亮的

get ... over with 赶紧干完算了（尤指令人不愉快的事）