Dicovalent carbon
[机] 二价碳
🧩 词语组成解析
🗣️ 情景例句
And the show will help promote it.
而这次展览会有利于促销它。
His health has been lousy.
他的健康状况近来很糟。
There was danger that the wave would rebound off the other side of the bank and send the dish plunging into the water again.
但是当波浪从河对岸折回来时，就有再次把盘子拖进水里的危险。