Ecopetrol
abbr. Empresa Colombiana de Petroleos （西班牙语）哥伦比亚石油公司
🗣️ 情景例句
the autograph of somebody who may be famous someday.
将来有可能成名的人的亲笔签名。
The efficiency is greatly raised,and the intensity of labor is decreased.
工作效率大大地提高了，而劳动强度却降低了。
Good afternoon, class! Who's on duty today?
同学们，下午好！今天谁值日？