环境与气候的变化是全球变化研究领域的中心课题。
The changes of environment and climate are major subjects of global change study field.
从软件开发的观点看，Android正处在开源领域的中心位置。
From a software development standpoint, Android sits smack in the middle of the open source world.
结果，个人计算机不再是技术领域的中心，今天，它更可能只是引导用户的众多设备之一。
As a result, the PC is no longer centre of the technological universe; today it is more likely to be just one of many devices orbiting the user.
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