率先攻击，先发制人
to attack first
He had authorized his army to take the offensive.
They declared they would take the offensive against troops laying siege to the town.
He understood the critical importance of taking the offensive.
The President had evidently decided to take the offensive at the news conference on Monday.
Education was the subject of one of the fieriest exchanges between the two candidates, with Walker taking the offensive.
See also: offensive noun