Common graphite
[机] 普通石墨
🧩 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
that you are very impressive.
你给人们留下了深刻的印象。
Nothing for nothing and very little for a half penny.
一分钱，一分货。
below 20 per cent, its bactericidal action is negligible.
浓度低于20％时，杀菌能力基本上就不存在了。