对许多企业来说，直接邮寄广告是最有效的广告形式。

For many businesses, direct mail is the most effective form of advertising.

youdao

镭射视力矫正手术对中等而不严重的视力问题最有效。

Lasik is best for moderate, not severe, vision problems.

《柯林斯英汉双解大词典》

她深深感到对马奈一家有效忠的义务。

She had developed strong loyalties to the Manet family.

《柯林斯英汉双解大词典》

Certainly this is like mid 1990s, we did have the web and the internet but things were slow and it just wasn't really conducive to actually finding things quickly unless you really gave some thought to the problem.

它有些像20世纪90年代，当然我们有网络和互联网,但是做事情很慢,在快速查找东西的时候不是很有效,除非我们对这个问题真正深入思考了。

哈佛公开课 - 计算机科学课程节选

in my description of what it meant to have the Efficient Market Hypothesis.

之前我描述有效率市场假说的时候,对你们说了些假话。

麻省理工公开课 - 计算机科学及编程导论课程节选

I did not abandon my interest in politics to discover how it might be bettered in other respects, and I was perpetually awaiting my opportunity.

我并未放弃对政治的兴趣,仍想探索,如何能更有效地管治，我也一直都在等待我的机会。

耶鲁公开课 - 政治哲学导论课程节选