But that's been a recent tradition, not a constitutional requirement.

但这是最近的传统，并不是宪法的规定。

There's no constitutional requirement for President Zuma to give in to his party's demand that he leave.

对祖马总统来说，没有宪法要求他拒绝他的政党的要求。

At 9 o'clock tonight President Trump is scheduled to fulfill a Constitutional requirement found in Article II, Section 3.

特朗普总统计划在今晚9点履行宪法第二条第三款的规定。

The previous six presidents gave their first speeches to the entire Congress in February, but that's been a recent tradition not a Constitutional requirement.

前两位总统于2月份首次向国会发表演讲，但这是最近的传统，并不是宪法的要求。