当然，锻炼和维生素补充剂不能抵御所有的潜在风险。
Of course, exercise and vitamin supplements can't head off all potential risks.
儿童需要蛋白质、各类维生素和矿物质(尤其是钙，磷)强健牙齿，抵御牙齿被腐蚀和预防牙龈疾病。
Children need protein, vitamins, and minerals (especially calcium and phosphorous) to build strong teeth and to resist tooth decay and gum disease.
专家警告说，一种新的能够抵御绝大多数强效抗生素的超级细菌已经进入英国的医院。
A new superbug that is resistant to even the most powerful antibiotics has entered UK hospitals, experts warn.
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