attack前加什么介词（attack用法短语以及固定搭配）

attack前加介词under ,under attack中文意思是受到攻击；在攻击之下

Government should attach great importance to cyber security which is constantly under attack and is of great importance to national security.政府应该十分重视网络安全，它不断地受到攻击，却又对于国家安全十分重要。