主持人欢迎先生们和女士们参加这次正式活动。

The host welcomed the ___gentlemen and ladies to the formal event.

在开始演讲前，他称呼众人为“女士们、先生们”。

He addressed the crowd as '___ladies and ___gentlemen' before beginning his speech.

公交车上，那位年长的绅士将座位让给了一位孕妇。

The elderly ___gentleman offered his seat to the pregnant woman on the bus.