vt. preclear
misc. prior approval
宪法要求总统寻求国会对军事行动的事先批准。
The Constitution requires the president to seek the prior approval of Congress for military action.
杀死坏老鼠不需要事先批准。
田纳西大学的沃尔特斯生命科学大楼，一尘不染，是一座典型的动物实验楼，在获得动物委员会对实验的事先批准方面十分谨慎。
The University of Tennessee's Walters Life Sciences building, is a model animal facility, spotlessly clean, careful in obtaining prior approval for experiments from an animal care committee.
应用推荐