The book deals with problems of population.

这本书论及了人口问题。

youdao

The urgency of the situation makes it necessary to reiterate the monumental problems of population growth.

情况的紧迫性使我们有必要重申人口增长的重大问题。

youdao

Those are examples of population problems.

那些都是人口问题的例子。

youdao

"It is crucial that national authorities do not rush to give information on source of infection which is not proven by bacteriological analysis, as this spreads unjustified fears in the population all over Europe, and creates problems for our food producers selling products in the EU and outside of the EU."

VOA: special.2011.06.10

Because nutrition is going to be one of the big problems of your generation; how to have enough nutritious food for the population as it grows.

因为营养,对你们这一代人是个大问题,怎样才能确保食物的质和量,能够满足日益增长人口的需求

耶鲁公开课 - 生物医学工程探索课程节选

The best solution to the economic problems of population ageing is for people to work longer.

ECONOMIST: Springing the pay-as-you-go trap

The study does not identify the specific causes of these job-related attacks or whether firefighters have an overall greater risk of dying from heart problems than the rest of the population, but does note the unique hazards of the profession.

MSN: Firefighters' heart attack risk soars at the scene

Development groups are nervous about attempts to define a hierarchy of global problems with population at the peak.

BBC: Harrabin's Notes: Population overload?