Gcm
abbr. greatest common measure 最大公测度; greatest common multiple 最大公倍数; gas-cut mud 气侵泥浆（油井）; glial cell missing 神经胶质细胞丢失
🗣️ 情景例句
How do you know so much about fishing?
你对钓鱼怎么知道这么多？
Very well.
很好。
Good afternoon.
下午好。