We cannot let the teachers for their hard sweat flowed in vain, we must be clear!

我们不能让老师辛勤的汗水白白流淌，我们一定要争气！

youdao

Therefore, we must be clear about the main target of attack; otherwise, we would isolate ourselves.

所以，不能混淆主要打击对象，一混淆就把自己孤立起来了。

youdao

But we must be clear, the network has brought us benefits, but also there is considerable negative impact.

但是我们也必须清楚，网络在给我们带来益处的同时，也存在着相当的负面影响。

youdao

To understand a changing industry we must be clear about the elements that constitute value in medicine.

FORBES: Connect

So we must be clear: Actions have consequences, and the writ of the international community must be enforced.

WHITEHOUSE: President Obama Authorizes Limited Military Action in Libya | The White House

In all of these actions, we must be clear about our ambitions.

WHITEHOUSE: President Obama & Prime Minister Cameron Joint Press Availability | The White House