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单词 effective
释义 effective
[ɪ'fek.tɪv] adjective
SUCCESSFUL 成功的
 ESSENTIAL 
■successful or achieving the results that you want 能产生预期结果的;有效的
It's an extremely effective cure for a headache.这种药物治疗头痛极其有效。
The lighting for the production made a very effective use of shadow.该戏剧的舞台灯光设计巧妙地运用了阴影效果。
She's a very effective teacher.她课上得不错。
Opposite ineffective
[ɪ'fek.tɪv] adjective
IN FACT 事实上的
[before noun]
■in fact, although not officially 实际上的;事实上的
Although she's not officially our boss, she's in effective control of the office.她虽然名义上不是我们的老板,但实际上掌管着该办事处。
[ɪ'fek.tɪv] adjective
IN USE 生效,有效
■If a law or rule becomes effective, it starts to be used (法律法规)生效的
The new laws will become effective next month.新法律将在下月正式生效。
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