Common difference
公差
🧩 词语组成解析
common
['kɑmən]
adj. 普通的;通俗的;[数学]公共的;共有的;
n. [法律]（对土地、水域的）共有权;公共用地;普通;平民;
🗣️ 情景例句
We're already scheduled elsewhere.
我们已经有其他安排了。
In the United States ,there are many factories for making cloth.
在美国，有许多造布的工厂 。
for their house, which had sound foundations, would have stood stoutly even if it had been almost submerged.
因为他们的房子地基牢固，即使洪水几乎灭顶也不会倒塌。