The task facing medicine in the twenty-first century will be to redefine its limits even as it extends its capacities.
21世纪医学面临的任务将是重新定义其限制，即使它扩大了其能力。
As Barack Obama prepares to take office, some are predicting that America has reached the limits of its superpower status and is now facing a decline in our ability to shape world events.
如今，奥巴马就要执掌美国，一些分析家预测美国霸主地位难保，因为目前美国对国际事务的掌控力日益衰弱。
Facing the quality of main market of our bee products, the safety and health and the technical standard are strictly day-by-day, which limits the exportation of bee products enormously.
面对我们蜂产品的主销市场的质量、安全卫生和技术标准日趋严格，极大的限制了蜂产品的出口。
When the new art practice completely break the limits of art institutions, art legitimacy of the institutions is facing the danger of being deconstructed, the End of art has also been proposed.
当新兴艺术实践完全突破了艺术体制的限制时，艺术体制的合法性面临着被解构的危险，艺术终结也就被提出。
The Esthetic Experience is also facing the difficulty which limits.
审美经验也面临着界定的困难。
The most important task we are facing is to strictly control blood screening. Conventional ELISA still has its detecting limits, eg: low-throughput, time-wasting and low sensitivity.
目前最主要的任务就是严格控制对外来血源的筛查，而传统的ELISA方法检测血液传播疾病的方法仍在不同方面存在局限性，如检测通量低、需时长、灵敏度较低等。
The most important task we are facing is to strictly control blood screening. Conventional ELISA still has its detecting limits, eg: low-throughput, time-wasting and low sensitivity.
目前最主要的任务就是严格控制对外来血源的筛查，而传统的ELISA方法检测血液传播疾病的方法仍在不同方面存在局限性，如检测通量低、需时长、灵敏度较低等。
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