严重行为 meaning in English

aggravated behavior

There might be gross breaches of the agreement that could topple the military balance it ratified .
可能出现推翻协定所规定的军事力量平衡的严重行为。
The security crime is a kind of activity , which hinders the normal development and violates security market , and the criminal legislation of security crimes servers as the legal foundation in the crime punishment
证券犯罪是妨碍证券正常发展和破坏证券市场的严重行为，而证券犯罪立法是打击证券犯罪的前提条件。