Ocm
abbr. Oracle认证大师（Oracle Certified Master, Oracle为数据库名）
🗣️ 情景例句
He said I should call him.
他说我可以打电话给他。
How often did I tell you not to slam the door?
我告诉你多少次不要砰然关门?
All the students are expert drivers, but before they drive any of the buses, they will have to pass a special test.
所有的学生都是开车的能手，但在驾驶公共汽车之前，他们必须通过一项专门测验。