be concentrated on

• 集中于

be concentrated on的用法和样例：

例句

1. Most have concentrated on shutting them down.
   大多数人都集中于弄垮爱沙尼亚的网站。
2. All the wit in the world is not in one head.
   世界上所有的智慧不可能集中于一个脑袋。