科技
attack的用法：
1、用作动词，可以是及物动词也可以是不及物动词；可以指行动上的攻击也可指言行上的攻击。如：
The enemy attacked at night.敌人晚上袭击 。
His remarks were attacked in the papers.他的言论在报上受到抨击。
2、用作名词，表示一般性“攻击”或“袭击”时，多为可数名词 ；表示疾病的“袭击”或“发作”时。如：
They were alarmed by a sudden attack.突然袭击使他们大为惊恐。
Another village in the area was also under attack.这个地区的另一个村庄也受到袭击。
