臺灣籍旅美老師今天交給我們的句子是：

The placenta is what keeps the calf alive during pregnancy. Directly connected to the mother's blood supply, it funnels nutrients and oxygen straight into the calf's body via the umbilical cord, and also exports its waste.
胎盤能維持幼子得以在懷孕的雌體內生存，與母親的血液供應直接相連，透過臍帶，運送養分與氧氣直接到幼子的身體，并且同時排出體內代謝廢物。

學習重點：

1.placenta 胎盤
placenta (n.) 胎盤

2.calf 小牛、小鯨
calf (n.) 小牛、小鯨

3.pregnancy 懷孕
pregnancy (n.) 懷孕
pregnant (adj.) 懷孕的

4.funnel 漏斗
funnel (n.) 漏斗

5.nutrient 營養物
nutrient (n.) 營養物
nutrition (n.) 營養、滋養
nutritious (adj.) 有營養的