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- How long is menstrual hind crises, other be safety period? 月经后多久是危险期，其他都是安全期吗？
- My girlfriend menstruation just went hind is one day safety period? 我女朋友月经刚过去的后一天是安全期吗?
- How long menstrual duration is commonly? Is oviposit period when? How long? Is safety period when? 月经持续时间一般为多长？排卵期又是什么时候？多长时间？安全期又是什么时候？
- My menstruation was deferred, what safety period calculates is last month, be pregnant easily? 我的月经推迟了，安全期算的是上个月的，容易怀孕吗？
- The Urumchi Railway Adminis-tration has carried out the running mechanism of safety quality system for more than 2 years. And the safety period of the Administration is prolonged. 安全质量体系运转机制在乌鲁木齐铁路局已实施两年多，全局安全周期延长。
- With reference to the MRL(2 mg/kg)of FAO/WHO,it was suggested that the safety period of Sportak was 10 d after spraying. 按FAO/WHO规定,施保克在芒果中MRL值为2mg/kg,经两年两地试验其残留量均低于此值。 施保克25%25乳油浸芒果贮藏保鲜,其安全间隔期在10d以上是安全的。
- Theoretical analysis and simulation study show that，comparing with CEM，BFP can enhance safety period by approximately 60% while maintaining equal energy overhead. 模拟结果与理论分析表明，与CEM相比，BFP在耗能相等的情况下将安全时间提高约60%25。
- "Bring into contact with is too much the person that because safety period uses contraceptive to fail and come,does induced abortion, cannot adopt fluky mentality really to this kind of method. “接触到太多因为安全期避孕失败而来做人工流产的人，对这种方法实在不能抱侥幸心理。”
- It seemed an eternity before news of his safety reached her. 他平安的消息到达她那里之前，那段时间似乎是无限漫长的。
- Thanks to I had tied then the safety belt. 幸亏我当时系上了安全带。
- The ship came about and headed back for safety. 这只船掉过头往回开到安全地带去。
- I don't wonder you were anxious about their safety. 你为他们的安全着急，我是不奇怪的。
- In the end they reached a place of safety. 他们终于到达了一个安全的地方。
- When do the new safety rules come into force? 新的安全规则何时生效?
- The safety precautions are totally inadequate. 这些安全措施完全不合格。
- I'm worried sick about my son's safety. 我十分担心我儿子的安全。
- If I lose my job, I've got no safety net. 我丢掉这份工作就无计可施了。
- We're all concerned for her safety. 我们都为她的安全担忧。
- The new aircraft is undergoing safety tests. 这种新飞机正在接受安全性能检验。
- His long absence raised fears about his safety. 他长期不在引起了大家对他的安全的担心。
