(掌声)随着东亚峰会在应对当代挑战的过程中发挥作用，美国期待着以更正式的方式与之接触。
(Applause.) And the United States looks forward to engaging with the East Asia Summit more formally as it plays a role in addressing the challenges of our time.
Sabre很清楚，其面对的挑战是如何删除掉与消费者所处的具体时间和地点无关的广告，因为对旅行者发送垃圾广告只会产生负面作用。
Sabre knows that its challenge is to turn away advertising that isn't relevant to a particular consumer at a specific time or location because spamming travelers would lead to a backlash.
新挑战：疾病。村民们现在很容易生病时，与作物和鸡肉相互作用。保持一个好的药品，防止大规模的传染病爆发。
NEW CHALLENGE: Sickness. The villagers now are susceptible to getting sick when interacting with crops and chicken. Keeping a good stock of medicine will prevent a massive contagion outbreak.
无论是个人、群体，乃至一个国家，在任何领域获得成功，均要赖于机遇与挑战的共同作用。
They altogether play great roles in achieving success in any field, whether to an individual, a community or even to a country.
检验自然选择在物种形成中的作用的一个主要挑战是，将生殖隔离的出现与有着生态学重要性的特征联系起来。
A principal challenge in testing the role of natural selection in speciation is to connect the build-up of reproductive isolation between populations to divergence of ecologically important traits.
随着研究的深入，人们开始认识到一种由离散事件与连续系统交互作用的一类混杂系统问题的重要性和挑战性。
Hybrid systems consist of the discrete event interacting with continuous dynamic, and the theory and application of hybrid systems have attracted many researchers.
观察和研究的结果表明：关于光滑界面生长动力学的BCF模型、关于杂质对台阶生长阻碍作用的CV模型等已受到冲击与挑战；
The BCF model about smooth interface growth kinetics and the C V model about impurity stopping step have been collided with the AFM study results.
观察和研究的结果表明：关于光滑界面生长动力学的BCF模型、关于杂质对台阶生长阻碍作用的CV模型等已受到冲击与挑战；
The BCF model about smooth interface growth kinetics and the C V model about impurity stopping step have been collided with the AFM study results.
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