敢于的英文：
dare to
be bold in
have the courage to

We need a government that will grasp the nettle
我们需要一个敢于大刀阔斧地处理问题的政府。

It was undeniably exciting to meet a lady who found the Van Der Luydens'Duke dull, and dared to utter the opinion,
能够遇见一个发现范德路易登家的公爵乏味并敢于直言的女子，真是振奋人心。

The mind, which renounces, once and forever, a futile hope, has its compensation in ever-growing calm. —— George Gissing
敢于永远抛弃不实际希望的心灵，将不断在沉着方面得到补偿。——吉森

An adventuresome prospector
敢于冒险的勘探者

Dare to go(somewheredangerous or unpleasant)
敢于去(危险的或令人厌恶的地方)

She slew all who dared to withstand him.
她把敢于对抗他的人都斩尽杀绝。

We should be bolder than before in conducting reform and opening to the outside and have the courage to experiment.
改革开放胆子要大一些，敢于试验

We dare to break a path unbeaten before
我们敢于走前人未尝走过的新路。

You should not fear to speak your mind.
你应该敢于说出自己的想法。

The gymnast dared a breathtakingly difficult move.
这位体操选手敢于做惊险的高难度动作。

"Dare you ask him ? No , I dare not ."
敢问他吗?不敢。

How dare you to flout at him?
你怎敢嘲弄他？

Don' t you dare sauce me!
你竟敢对我无礼！

She is a bold piece.
她是一个放荡的女人。

The Government resolved on a bold policy.
政府决定采取大胆的政策。

This is bold and exuberant cooking.
这是大胆而又精彩的烹饪。