为了安全起见，所有访客必须佩戴安全帽。

___In ___the ___interest ___of safety, all visitors must wear a helmet.

为了大家的安全，请记得锁门。

___In ___the ___interest ___of everyone's security, please remember to lock the door.

为了公平起见，会议被缩短，以便每个人都有发言的机会。

The meeting was shortened ___in ___the ___interest ___of fairness to give everyone a chance to speak.