🧩 词语组成解析
placenta
[plə'sentə]
n. 胎盘，胎座;
🗣️ 情景例句
He made a favorable impression on her father.
他给她的父亲留下了很好的印象。
Hotels in America don't usually serve dinner in the rooms.
在美国的旅店里，正餐通常是不送到房间里。
It was upon this principle that the first instruments were made,
据这一原理，制造出了最初的地震仪器，