Percolumbic acid
[化] 过铌酸
🧩 词语组成解析
🗣️ 情景例句
In my country, we get a couple of days off for Easter.
在我国，我们在复活节的时候有好几天的假期。
Then I asked him if he knew anybody in New York .
然后我问他是否他在纽约认识人。
They located the right chimney by tapping at the walls and listening for the man's cries.
他们通过叫击烟囱倾叫声而确定传出声音的那个烟囱。