He may construe the approach as a hostile act.

他可能把这种方法理解为一种不友善的行为。

《柯林斯英汉双解大词典》

He would leave the fort on April fifteenth if the Confederates made no hostile act against Fort Sumter or against the United States flag.

VOA: special.2009.08.06

Since I have not been informed that South Carolina declared war on the United States, I can only believe that this hostile act was done without your knowledge or permission.

VOA: special.2009.07.23

The concern for diplomats and trade ministers now is that Russia will interpret Britain's attempt to seek justice as a hostile act.

FORBES: Polonium Suspect Lugovi Chills U.K.-Russia Relations

Facebook must act somewhat hostile toward shareholders because, no matter how they explain it, most investors do not understand the DNA of a perpetual startup.

FORBES: Mark Cuban Gets Facebook; Most Others Don't

It was wonderfully deft in its controlled daring: a lieutenant colonel baiting a rear admiral in public was a scary tightrope act, even in a community as notably hostile to Navy brass as the Marines.

NEWYORKER: Rat Beach