短语讲解：

1. Yet, many workers are concerned about losing their jobs as companies re-organize.

concern about 使（自己）关心…
例句：She showed great concern about you.
她很为你担心。

2. The saying means to be in a lot of trouble.

a lot of 很多
例句：He is a man with a lot of experience under his belt.
他是个阅历很深的人。