单词safe period
un.: 避孕安全期
（女性经期前或来经时不易怀孕的）安全期:
the time just before and during a woman"s period when she is unlikely to become pregnant
避孕安全期
He said, look, he said, this doesn"t put a barrier between sperm and egg. All it does is artificially create a safe period.
他说过，这并不会将精子与卵子隔开，它只是创造了一个安全期。
And the Catholic church says it"s okay to have intercourse during your safe period.
而教堂方面也说在安全期是可以有性行为的。
Well, if you take a pill that guarantees you a safe period, what"s the difference?
也就是说你通过吃药，可以肯定获得安全期，有什么不妥？
Nanchang Women"s Health Network experts also said that the safe period safe?
南昌女性健康网专家也表示，对于安全期安全吗？
Only 23. 18% students could figure out the safe period exactly;
仅有23.18%的同学能够准确计算出安全期；