Obm
abbr. 自创品牌（Orignal Brand Manufactuce）；[冶]底吹纯氧转炉炼钢（Oxygen bottom-blown Maxhuette）
🗣️ 情景例句
My vacation was terrible, it rained the whole time.
我的假期简直糟透了，整天都在下雨。
He has been to America.
他曾去过美国。[表示曾经有过的经验]
They have found that it is connected with the passage of days and the phases of the moon.
他们发现代码与昼夜更迭和月亮圆缺有关，