Nivalic acid
[化] 地衣酸
🧩 词语组成解析
🗣️ 情景例句
Take the time, Susan.
别那么忙， Susan。
Do you have a book?
你有一本书吗？
It is ten o'clock.Mrs.Sawyer usually stays at home in the morning, but this morning, she is going to the shops.
现在是10点钟。上午，索耶夫人通常是呆在家里的，但今天上午，她正去商店买东西。