陪伴着风风雨雨，我们的母亲祖国已经55周岁了，这一天，举国上下都在欢度庆贺这一节日。

With the ups and downs, our mother country has been 55 years, and this day, the whole nation in celebrating this holiday to celebrate.

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他们手术后4周内，接受过有创性牙科工作的那些人有增加的心脏病或中风风险，但是这个风险是“暂时性的”，研究人员报道。

Those who underwent invasive dental work had an increased risk for heart attack or stroke in the four weeks after their procedure, but this risk was "transient," the researchers report.

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