focus on/upon

• 使集中于焦点； 使集中在 ... 上； 强调； 着重

focus on/upon的用法和样例：

例句

1. The teacher urged on us the necessity of practice.
   老师向我们强调练习的必要性。
2. I must insist on more regular hours.
   我必须强调起居定时。
3. The book focuses on abstract analysis.
   这本书着重于抽象分析。
4. He supported his burden on his shoulders.
   他用双肩荷着重物。