We call each other by our first names here.

我们这儿彼此直呼其名。

Staff wore name tags and called inmates by their first names.

工作人员戴着姓名标签，对同僚直呼其名。

Use first names instead.

请用名字取代称呼。

Students call teachers by first names.

在学校里学生们通常直呼老师的名字。

His first names are Peter George.

他名叫彼得·乔治。