Quadratic crystal
[医] 四方晶体
🧩 词语组成解析
a. 二次的\\nn. 二次方程式
🗣️ 情景例句
Good morning, Mr. Smith. I brought the contract you are been looking for.
上午好，斯密司先生。我带来了你要等待的合同。
They had to cut down a lot of trees to make room for farms.
他们为了为农场增加空间不得不砍倒很多树。
What shocked him most was that the men who carried him were black.
最使他感到惊奇的是，把他运走的人都是黑人。