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
Then, please tell him that Zhao Li called.
这样好了，请转告他赵力来过电话。
Is the plane leaving?
飞机要起飞了吗？
Mrs.Richards realized that it must be the man from the Electricity Board who had come to read the metre.
理查兹夫人这才想到一定是供电局来人查电表了。