我今晚身兼两职—既是家长又是老师。

I'm wearing two hats tonight—parent and teacher.

学校里人手紧缺，校长不得不身兼两职。

They are so shorthanded in the school that the schoolmaster has to wear two hats.

那个身兼教授与作家两个身份的人正在做讲座。

Thee professor and writer is giving lectures.

阿卡迪·奥斯特洛夫斯基(访谈在此)诠释了为何其身兼双角。

Arkady Ostrovsky (interviewed here) explains why it is both.

因为人力资源有限，创业团队中每个人都身兼多职、头上戴着多顶帽子。

Because of the limited human resources, entrepreneurship team everyone holding many important posts, the heads of wearing many hats.