1. The best contraceptive is a glass of cold water: not before or after but instead. 最好的避孕方法是一杯冷水：不是在之前或之后，而是用它代替。
2. Family planning work group to a small mountain village, the contraceptive birth control measures. 计划生育工作小组来到一个小山村，推行避孕节育措施。
3. The sperm acrosome reaction research helps us to understand and control the process of fertilization, and develop new male contraceptive agents. 对于精子顶体反应的研究有助于了解受精过程并人为进行控制与干预并开发男性避孕剂。
英英解释
n.
1. an agent or device intended to prevent conception
2. capable of preventing conception or impregnation
