劳动分工受市场规模的限制。
The division of labor is limited by the extent of the market.
点燃蜡烛的同时也投下了阴影。
我的目标是创作出经得起时间考验的音乐。
There can be no permanent progress in the battle against hunger until the agencies that fight for increased food production and those that fight for population control unite in a common effort.
The most important skill in mathematics is the ability to think clearly.
Quality is not a claim; it is a evidence.