什么是skyrocket ? 什么是rock bottom 呀？

skyrocket (v.)

Definition: If a price or an amount skyrocket, it greatly increase very quickly. 

急升、猛升、剧增、剧涨

The trade deficit has skyrocketed. 

贸易逆差一直在急剧增长。

His popularity has skyrocketed after his latest movie. 

自从他的新电影上映以后，他的人气一直在飙升。

The crisis has caused oil prices to skyrocket. 

这次危机导致了汽油价格急速上涨。

be at / hit / reach  rock bottom 

Definition: 

1. to be in a very bad situation that could not be any worse. 

2. to be at a very low level 

1. 糟糕透顶

2. 在非常低的水平、在低谷、在谷底

I was at rock bottom, and knew I had to stop drinking. 

我那时(身体)状况糟透了，就知道是时候要戒酒了。

We bought the house when prices were at rock bottom. 

我们是在房价最低的时候买下了这套房的。

You've probably heard about the challenges brick-and-mortar stores are facing. Many retailers have hit rock bottom and filed for bankruptcy in 2018.

大家也许有听说过 - 传统实体店现在正面临这种种挑战，光是在2018年就有很多零售业者已经处在谷底困境而相继申请破产。

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