as close as herrings in a barrel

• 拥挤不堪

as close as herrings in a barrel的用法和样例：

例句

1. There is no space for passengers in the crowded train.
   在拥挤不堪的列车上，再也没有旅客的立足之地了。
2. In the holiday season one finds the trains unpleasantly full of people.
   节日期间，人们可以看到火车上拥挤不堪，人满为患。