accidental pregnancy

• 意外受孕

accidental pregnancy的用法和样例：

例句

1. If pregnancy doesn't occur for several cycles, the lining continues to increase in thickness until cysts form in it.
   如果母猫在几个发情期内都没有受孕，那麽子宫内膜会继续增厚，直到形成囊肿。
2. To ensure a healthier pregnancy, the report also urges doctors to counsel women to lose weight before conceiving.
   为确保一次更健康的怀孕，该报告还敦促医生要劝告女性在受孕之前减肥。