开始起作用;见效
to start to produce the results that are intended
The aspirins soon take effect.阿司匹林药片很快见效。
生效;开始实施
to come into use; to begin to apply
The new law takes effect from tomorrow.新法律明日起生效。
释义来自《牛津高阶英汉双解词典》第 9 版