1、attack
攻击；进攻
Fifty civilians in Masawa were killed when government planes attacked the town.
马萨瓦市遭到政府军飞机轰炸，有50名平民丧生。
He bundled the old lady into her hallway and brutally attacked her.
他将老妇人推到她家走廊上，并对她一顿暴打。
抨击;强烈指责;非难
He publicly attacked the people who've been calling for secret ballot nominations.
他公开抨击了那些主张用不记名投票方式确定任命人选的人。
A newspaper ran an editorial attacking him for being a showman.
一家报纸发表社论，批评他善于作秀。
（疾病、化学药品、昆虫等）攻击，侵蚀，破坏
The virus seems to have attacked his throat.
病毒看来已经侵蚀到他喉部了。
Several key crops failed when they were attacked by pests.
一些主要农作物由于遭受虫害而歉收。
2、effective
有效的;能产生预期效果的
The project looks at how we could be more effective in encouraging students to enter teacher training.
该项目着眼于我们如何能够更加有效地鼓励学生参与教师培训。
Simple antibiotics are effective against this organism.
一般的抗生素能够有效对抗这种微生物。
实际的;事实上的
They have had effective control of the area since the security forces left.
自从安全部队撤离后，他们实际上控制了该地区。
a restructuring that would have resulted in an effective increase on one of their most popular excursion fares.
原本会使他们最热门的一条短途旅游线路的费用出现实质性上涨的调整