Nephrocoel
肾节腔
🗣️ 情景例句
when I was about eighteen years old.
那时我差不多十八岁。
Little wealth, little care.
财少寡忧。
I bought two expensive dictionaries here half and hour ago, but I forgot to take them with me.
半小时以前我在这里买了两本很贵的辞典，但是我忘了拿走。