Calcium metabolism
[医] 钙代谢
🧩 词语组成解析
🗣️ 情景例句
I need to post a letter.
我得去寄封信。
He's still a boy after all.
他毕竟还只是个孩子。
I supposed him to be very clever but he was in fact a fool.
我以为他很聪明，其实他是个蠢货。