But the drugs cannot reverse brain damage that has already occurred, and they carry risks of their own because they also strip useful metals from the body, such as iron and zinc.
而这种药物无法弥补已产生的大脑损伤，且药物本身存在风险，因为它们也会将有用的金属元素，如铁与锌一并剥离排出体外。
The new ductile iron manhole cover is arranged on a support seat on the embedded strip, so when the vehicle passes in the top cover, reduce the overall vibration, effectively prevent noise.
新式球墨铸铁井盖在支座上装上了嵌入式胶条，这样在盖板上方有车辆经过的时候，会减少整体的震动，有效防止响声。
The cold narrow strip rolling line of Xinyu Iron and Steel Co. and the main performance of new added equipment are introduced.
简要介绍了新钢冷轧窄带钢生产线改造前的情况和改造后新增主要设备的性能。
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