?? 詞語組成解析
placenta
[pl?'sent?]
n. 胎盤，胎座;
??? 情景例句
Yes, it is possible that we forgot to buy cinnamon.
是的， 我們可能忘了買肉桂。
What are you reading?
你正在讀什么？
I am afraid that l have to go.
我要走了。