Some of the larger showcase venues are using designs and materials that are cutting-edge for China, presenting technical problems that require more time for construction, the officials said.

相关官员透露，一些大的场馆用的设计和材料对中国来说是最尖端的，也面临需要时间解决的技术难题。

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At that time, China had only two aerial skiing venues, but now hundreds of young athletes train in more than 10 specialized venues.

那时，中国只有两个空中滑雪场地，现在几百名年轻运动员在中国10多个专业场地进行训练。

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