The estrogen - progestin hormonal pill differs from traditional birth - control pills in that it does not include the " week off " of placebo pills that leads to a cessation of artificial hormones and bleeding 这种含有雌激素和孕酮的激素药丸与传统避孕药区别在于：它没有安慰药丸所具有的“烦心周”效应，并可停止月经出血和人工激素合成。
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The estrogen - progestin hormonal pill differs from traditional birth - control pills in that it does not include the " week off " of placebo pills that leads to a cessation of artificial hormones and bleeding 这种含有雌激素和孕酮的激素药丸与传统避孕药区别在于：它没有传统避孕药的“停药周” ，因而也就没有停止服用人工激素和月经出血现象。
