The best we'll do is do the best we can and just be determined to do what we have to do to survive.

我们能做的最好的事，就是尽我们所能，坚定地努力让自己存活下来。

If we really want to promote economic development, we shall have to carry out some key projects, and we must be determined to do so, whatever the difficulties.

真想搞建设，就要搞点骨干项目，没有骨干项目不行。不管怎么困难，也要下决心搞。

Be so determined that no matter what happens the first time you try to do something you will try again.

不管你第一次尝试时发生了什么，都要有再试一次的决心。

I spoke to him after class again today, and he assured me this semester was going to be different. He was determined to do better.

今天，在课后我又一次找他谈话，他对我保证这学期的表现会有所不同。他决心比上学期做得更好。

Still to be determined: Do sleep deficits actually cause people to become overweight?

还有问题有待解决：睡眠不足会不会真的使人变得肥胖呢？