Calcium could influence mortality risk in many ways, for example by reducing blood pressure, cholesterol, or blood sugar levels.

　　钙在降低死亡风险的影响上是多方面的，比如它可以降低血压、胆固醇或降低血糖水平。

　　For the men in the study, the main sources of calcium in the diet were milk and milk products and cereal products.

　　我们得知那些被实验者饮食中主要的钙质来源是牛奶或奶制品，以及谷物制品。