Good evening, ladies and gentlemen!

　　晚上好，女士們先生們！

　　Good evening and welcome to physics today.

　　晚上好，歡迎來到今天的物理課堂。

　　Good evening, madam, my pleasure to be here tonight.

　　晚上好，女士，您今晚能來這兒是我的榮幸。

　　Good evening, boys and girls. Welcome to our dumpling party.

　　晚上好，朋友們，歡迎來到我們的餃子晚會。