diplomatic convention

例句：

1. 1.The diplomats have been meeting regularly to discuss the diplomatic conventions.
   外交官们定期会面讨论外交惯例。
2. 2. The treaty established by the two countries is a diplomatic convention that has been in effect for many years.
   两国签订的条约是一项已经生效多年的外交惯例。
3. 3.The diplomats are expected to follow the diplomatic conventions when negotiating with other countries.
   预计外交官们在与其他国家的谈判中将遵循外交惯例。