2 sentences

1. 胎盘在怀孕期间发育，并将发育中的婴儿与母亲联系起来。

   tāi​pán zài huái​yùn qī​jiān fā​yù, bìng jiāng fā​yù zhōng de yīng'ér yǔ mǔ​qīn lián​xì qǐ lai.

   The placenta develops during pregnancy and connects the developing baby to the mother.

   Source: CCMatrix

2. 大多数哺乳动物在出生后吃胎盘，但我们只能猜测它们为什么会这样做。

   dà​duō​shù bǔ​rǔ​dòng​wù zài chū​shēng hòu chī tāi​pán, dàn wǒ​men zhǐ​néng cāi​cè tā​men wèi​shén​me huì zhè​yàng zuò.

   Most mammals eat the placenta after birth, but we can only guess why they do so.

   Source: CCMatrix