2 sentences

1. 中学的性教育课涉及生殖生物学。

   zhōng​xué de xìng​jiào​yù kè shè​jí shēng​zhí shēng​wù​xué.

   Secondary school sex education lessons cover the biology of reproduction.

   Source: United Nations

2. 雌性蟑螂有三个月的生殖周期，在此期间它们可以有多达50个后代。

   cí​xìng zhāng​láng yǒu sān​ge yuè de shēng​zhí zhōu​qī, zài​cǐ qī​jiān tā​men kě​yǐ yǒu duō​dá50 ge hòu​dài.

   Female cockroaches have a three-month reproductive cycle during which they can have up to 50 offspring.

   Source: CCMatrix