It's something that has never been undertaken before.

这件事是以前我们没做过。

Then there are a number of actions that have been undertaken.

其次是采取了多项行动。

Brexit is one of the most challenging projects ever undertaken by parliament.

英国脱欧是议会有史以来最具挑项目之一。

D-Day marks the biggest air, land and sea operation ever undertaken.

“D-Day”是史上规模最大海陆空行动。

I'm pretty sure we wouldn't have undertaken polio without that example.

我很确定，如果没有这个例子，我们就不会感染脊髓灰质炎。

Sounds like a big project. Isn't it too big for one country to undertake?

听起来像是一个大工程，由一个国家来完成话是不是量太大了？

This will be the most dangerous voyage he will ever undertake.

这将是它从未遇到过最危险程。

All activities that are innocuous and at the time they were undertaken, were not illegal.

所有活动都没有造成危害，目前都在正常进行，都是合法。

A major review of army medical standards was undertaken with sweeping effects.

政府对军队医疗标准进行了一次重大审查，产生了广泛影响。

Now because of potential interference with maternal resuscitation, fetal monitoring should not be undertaken during cardiac arrest in pregnancy.

由于对产妇复苏潜在，儿监护不应该在妊娠期心脏骤停期间进行。

In the past decade almost 2,000 liberalising reforms have been undertaken in areas covered by the report.

在过去十年内，在这份报告所包含地区内大约有2000个自由化改革措施被实施。

So that's why we're saying Drive Electric is the most ambitious coalition and campaign in our space ever undertaken.

所以我们才说，Drive Electric 是我们领域内有史以来最雄心勃勃联盟和运动。

She also promised that the commission would undertake a comprehensive reform of the electricity market.

她还承诺，该委员会将对电力市场进行全面改革。

A student revealed that if her teacher gives five problems, she will undertake ten.

一位学生透露，老师若是布置五道题，她会做上十道。

They encouraged their children in their studies but did not undertake the work for them.

在学习方面他们给孩子以鼓励，而不是代劳。

Medical knowledge has undertaken this grand revolution in the last two months because of the pandemic.

医学知识带来了这场巨大变革，这是我们在过去两个月里疫情里看到。

She had undertaken a long journey, carrying with her only child, a boy two years old.

她带着两岁独生儿子走了一段很长路。

The report is the latest in a series undertaken by the center to examine mass attacks.

这是该中心为研究大规模袭击事件而经过一系列调查后发布一份最新报告。

They undertake this perilous journey for food.

他们肩负着这趟涉险寻食之。

UN agencies have been undertaking such prevention focused initiatives in many parts of the world.

联合国机构已经在世界上很多地区，展开各类以预防为主项目。