The problem of China petroleum security is very pressing, going with the enhancement of degree of depending on foreign problem increasingly.

随着中国对国际石油市场的依赖程度日益增加，中国石油安全问题日益凸显；

youdao

The problem of imbalances goes much wider than America and China.

它们的失衡问题比中美两国的严重得多。

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A: the core problem of China-Japan relations is that Japan should rightly treat the issues left by the history.

答：中日关系的核心问题是日本要正确对待历史的问题。

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Today,the number is still 40 percent. Part of the problem is that a number of big importers, such as China and Japan, are not doing enough to stop the import and sale of illegal timber.

VOA: standard.2010.07.28

Economist Vincent Chan from Credit Suisse in Hong Kong believes the main problem for the government is to manage expectations of the second generation of migrant workers who form the back bone of China's success.

VOA: standard.2010.06.24

Apparently well aware of the problem, China's policymakers have started to tighten credit.

ECONOMIST: China's economy

Rising housing costs in Shanghai, Beijing and Guangzhou have exacerbated the problem of rising inequality in China, as the major city centers become unaffordable to many middle class and lower-middle class Chinese.

FORBES: As Expected, China Property Bubble Re-Inflates

Without the opening up of airspace, general aviation in China faces a chicken-and-egg problem: the lack of infrastructure on the ground limits the prospects for growth, but without more flights there is little reason to invest in such infrastructure, or in training schemes for pilots and technicians.

ECONOMIST: Aviation in China