Other types of combination birth control pills allow you to reduce the number of periods you have each year.
其他种类的生育控制组合药片可以减少你每年的(排卵)周期数量。
Different types of combination birth control pills contain different doses of estrogen and progestin.
不同种类的生育控制组合药片含有不同剂量的雌激素和黄体酮。
Different types of combination birth control pills contain different doses of estrogen and progestin.
不同种类的生育控制组合药片含有不同剂量的雌激素和黄体酮。
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