attach to1. 加入，参加Pro. Smith was attached to the medical college as a guest professor for two years.史密斯教授在医学院当了两年的客座教授。
2. 加于…之上No blame attaches to him for the accident.这个事故他没有受到责备。
We should attach primary importance to the development of economy.我们要把发展经济的工作放在第一位。