如果是公司内部会议，例如：
OK, everybody, we seem to be complete. Can we get started?
如果是与客户开会，例如：
OK, if you like, we can start now.
如果是国际性会议，例如：
Since the majority of the required number is present, the meeting is formally declared to be convened.
点明会议目的，例如：
The purpose of this plenary session is to make a general review of our activities during this past year, and to propose new plans for activities during the coming year.
介绍会议时间安排，例如：
We've scheduled one and a half hours for the meeting.
