农业面对的大问题不是人口数，而是有迹象表示农业生产力已经开始持平。

The big problem for agriculture is not the number of people, but signs that farm productivity may be levelling out.

youdao

是否能依靠更加先进的生物燃料(比如利用非食物农作物或者利用农作物的纤维素部分、甚至利用柳枝稷或者海藻这些非食物作物来制造生物燃料)来解决上述这些问题还是个未知数。

Those problems might or might not be solved by more advanced biofuels, such as those made from the non-food or cellulosic parts of crop plants or even non-food crops such as switchgrass or algae.

youdao

8 - bit和24 - bit模式简单一些，但有他们各自的问题(8 - bit颜色数太少(256)，而24 - bit速度更慢)。

8-bit and 24-bit video modes are easier, but with their problems (8-bits gives you few colors (256), while 24-bit modes are slower).

youdao

A lot more of you chose numbers between 20 and 30, so we're really getting into the meat of the distribution.

有很多人选了20至30之间的数,所以我们已经涉及到分布的问题了

耶鲁公开课 - 博弈论课程节选

I want to show you how easy it is to change the code. But, notice, once I've added this I actually have a problem. This is now an under-constrained problem. I have more unknowns than I have equations.

我加上这个条件后,我马上面临一个问题了,这就是现在是一个非约束性问题了,我的未知数比方程数多,你从代数中可以知道。

麻省理工公开课 - 计算机科学及编程导论课程节选

Well, if intuitively the problem is the result of dividing an int by an int, surely a solution is: "Don't do that," right?

好的，直观地看,如果那个问题的原因是因为整型数除以整型数的话,无疑有个解决方案是：“不要那样做“，是吗？

哈佛公开课 - 计算机科学课程节选