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Still, the clock is ticking and President Trump is doing his best to add dramatic tension by threatening a withdrawal.


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    Sina's Weibo service, for example, has long offered features that Twitter lacks, notably a commenting function that allows multiple users to add their own thoughts to a user's posts. Tencent's QQ instant messaging service, which has more than 700 million users, offers additional features such as skins to change the look of the client and serves as a portal for the company to advertise other products and services. Sina declined to comment.

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  • 中国网络游戏排行榜

    Why does beauty exist? To answer this question, Richard O. Prum, an ornithologist, is working to revive an idea advanced by Charles Darwin: the attractiveness of an animal to another of its species isn’t only tied to fitness and good genes. Rather, animals — especially birds in Dr. Prum’s work — are making subjective decisions. He hopes that evolutionary biologists will stop “explaining away desire.”

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    This technology previously existed for arms, but legs are rather more complicated. And since a misread signal can send you jumping off a bridge or in front of a moving car, thought-controlled legs need more stringent programming than equivalent arms. As one of the researchers delicately put it, “If you're using a bionic arm and it misbehaves, the elbow may move slightly. If the prosthetic leg misbehaves . . . that could be quite a safety issue.”

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    v. 引导,指挥,管理

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  • “品质租房”应当名副其实

    “Airbnb is here to stay,” Mr. Gottsegen said. “Instead of fighting it, we should wrap our arms around it and make it better.”

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