be expert at

It may be interesting to note that control of swallowing and regurgitation can be acquired, and expert yogis can do so at will.

有趣的是可以学会控制吞咽和呕吐，瑜伽高手就可以随意这样做。

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Mr. Dewey, you seem to be quite expert at chopsticks.

杜威先生, 看起来你筷子用的很好啊.

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This will likely be the year with the most cases, Chen Xiaoguang, an infectious disease expert with the School of Public Health and Tropical Medicine at Southern Medical University in the provincial capital Guangzhou, said on Thursday in an email.

位于省会广州的南方医科大学的公共卫生与热带医学学院传染病专家陈晓光周四在一封电子邮件中说，今年将很可能是发病最多的一年。

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Alexei Malashenko, geopolitical expert at the Moscow Carnegie center, said the endorsement of UN sanctions against Iran would involve "painful sacrifices" for Russia that would only partly be offset by the prospect of improved relations with the US.

莫斯科卡内基中心（moscow carnegie center）地缘政治专家阿列克谢马拉申科（alexei malashenko）表示，支持联合国制裁伊朗将令俄罗斯做出“痛苦的牺牲”，只有俄美关系改善的前景才有可能部分抵消这种牺牲。

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" This party meeting will be a coming-out party for Kim Jong-un," said Peter Beck, a North Korea expert at Keio University in Japan.

“这个党的会议将是金正云亮相的盛会，”彼得说贝克，一个北朝鲜在日本庆应义塾大学的专家。

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The bone of hospital butt joint of where is more be expert at?

哪里的医院对接骨比较在行啊?

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Competent scientists, however, must be expert at changing their minds.

然而，有能力的科学家必须善于改变看法。

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Catherine Sun, patent law expert at Foley Lardner in Shanghai, said: Normally we advise Chinese companies when they go to the US or Europe that they might be sued.

富理达律师事务所（Foley Lardner）上海代表处专利专家孙嘉鸿（Catherine Sun）表示：正常情况下，中国企业前往美国或欧洲时，我们忠告他们可能会遭到起诉。

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" The pilot project and public distribution can be totally different. It was basically safe under test conditions, but it` s hard to say if it` s suitable for everyone," said Huang Jianshi, a disease control expert at Peking Union Medical College Hospital.

北京协和医学院疾病控制专家黄建始表示：小规模的试验和大规模的推广完全是两码事。在试验范围内甲流疫苗可以说基本可靠，但是很难说它是不是适合所有的人。

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