To figure out how well a contraceptive method 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。

Several experts said that the cost of developing an entirely new contraceptive method 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。

Objective To understand the awareness of birth control method and psychological health among contraceptive women in countryside and explore the relationship between them.

目的探讨农村节育妇女对不同节育措施的认知状况及与其心理健康状况间的关系。

"There is no perfect contraceptive method, so there will always be abortion."

VOA : standard.2010.06.24

Still, according to a 2002 study from the Centers for Disease Control and Prevention, the leading contraceptive method among women ages 15 to 29 is the pill.

CNN: Gaps found in young people's sex knowledge

Unlike Dr Anderson's method, however, the Strathclyde contraceptive has not yet been tested on people, only on rodents.

ECONOMIST: Contraception