单词:iron tap hole
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[00:04.60]Lesson 9 [00:07.47]1.Dialogue [00:11.31]The organizer of a conference is meeting one of the speakers at the airport. [00:17.06]Hello.You must be Dr Yang.How do you do?My name's David Lee. [00:24.42]How do you do? [00:27.27]It's a pleasure t
1. A judge has found 3 New York Police detectives not guilty in the shooting death of an unarmed man. The officers shot Sean Bell 50 times just hours before his wedding. Rev. Al Sharpton has called for a federal investigation. 2. An eight-mile stretc
For many of us, walking in the rain can be a pleasant and even soothing experience. For those of us who wear glasses, though, drops of water on the lenses and obscured vision can have us running for c
人工生物角膜在中国研发成功 According to statistics, visual impairment for one forth of China's blind population was caused by problems with the cornea. For these people, a cornea transplant is the only hope they have of seeing again. In
Colored contacts give the wearer a doe-eyed, innocent, childlike appearance. But experts warn that the eye candies can be dangerous. 彩色隐形眼镜能使佩戴者眼神看上去天真无邪,外表略带孩子般的纯真。但专家警告说,这