If you can use a word correctly and effectively, you comprehend it.

你如果能正确和有效地使用一个字，你就了解它了。

《新英汉大辞典》

youdao

In this lesson, students learn how to surf the internet safely and effectively.

在这节课中，学生们学习如何安全有效地上网。

youdao

Once the Games end February 28, safely and effectively getting all fans,athletes, and officials out of Vancouver will be a huge task as well.

VOA: standard.2010.02.21

You need to make your case succinctly and effectively, but you always get a hearing including me.

你需要把你的意见,表达得简洁有效，总统总会听取别人的意见，包括我。

普林斯顿公开课 - 国际座谈会课程节选

So the Bank of England effectively enforced that the banks in England kept adequate reserves and they would see some of these reserves in the deposits at the Bank of England.

所以，英格兰银行有效率地强制执行了,这种制度-英国的银行保有足够的准备金,并且他们将在向英格兰银行付的保证金里,看到准备金其中的一部分。

耶鲁公开课 - 金融市场课程节选

Sephora sales associates focus on color, fragrances and skin care and effectively cross-sell products.

FORBES: Sephora: Department Stores Cannot Stop Its Global Growth

When we live with greater attention and presence we act more deliberately, prudently, and effectively.

FORBES: How To Focus In A World Of Multitasking Distraction

But, additional direction is necessary to clarify how these mediums can be used accurately and effectively.

FORBES: Is The Medium The Message? Netflix's Decision To Post Material Information On Social Media Channels