28 days

• It uses 28 day cycles that mirrors the women ' s moon cycle
  它使用28天作为一个周期，反映了妇女的月经周期。
• 28 days luck 15 days luck 22 days luck
  小乐-生后28天
• 28 days luck 22 days luck 15 days luck
  小乐-生后22天
• You shed skin every day to produce a whole new layer of skin every 28 days
  每隔28日，你的皮肤就会焕然一新。
• How many months have 28 days
  有多少个月份有28天
• Have menstrual cycles of 28 days
  月经周期为28天
• The appeal must be submiited within 28 days of your receiving the refusal notice
  有。您必须在接到拒签通知后的
• How many months have 28 days
  几个月有28天？
• There is 28 days in february
  二月份有28天。
• Incubation lasts anywhere from 24 - 28 days , and seems to be temperature dependent
  孵化期为24 ? 28天，具体取决于温度条件。