To figure out how well a contraceptivemethod works, you should consider typical-use rates and perfect-use rates.
为了明白药物方法的工作效果有多好，你应当考虑下完美使用和典型使用的比例。
2
Several experts said that the cost of developing an entirely new contraceptivemethod outweighed prospective profits, and that research financing from pharmaceutical companies had dried up.
有些专家说研究一个完全新型的避孕药的费用大于预期的利益，医药公司提供的研究经费已经基本耗尽。
3
Objective To understand the awareness of birth control method and psychological health among contraceptive women in countryside and explore the relationship between them.