Definition: successful or achieving the results that you want Level: B2
这是一种非常有效的头痛治疗方法。
It's an extremely ___effective cure for a headache.
这场制作的灯光非常有效地运用了阴影。
The lighting for the production made a very ___effective use of shadow.
她是一位非常有效的老师。
She's a very ___effective teacher.
