All right, ladies and gentlemen, I declare the meeting open. 好了，女士们、先生们，我宣布会议开始。
It is an honor for me to declare the conference open. 很荣幸由我来宣布会议开幕。
Let's call the meeting to order. 我宣布会议开始。
半个句型要记牢
declare the meeting open (宣布会议开始)
Tip:
declare这里表示"宣布，宣告注意易与announce混淆announce更接近于汉语"公布"、"告知"的意思，它所涉及的是一件对方原来不知道的事。如: The accident was announced to his family by telephone. (警方已将事故用电话告诉了他的家属。); declare含有庄严宣告或交代清楚的意思，它所涉及的事不一定是对方事先所不知道的。如: The accused declared himself to be CBS innocent. (被告宣称自己无罪。)。另外会议开场白还可以说Let's begin the meeting. Let's get started. (我们开会了。)
