Unctad
n. 联合国贸易与发展会议
📖 牛津释义
UNCTAD
abbr
缩写 = United Nations Conference on Trade and Development 联合国贸易和发展会议.
🗣️ 情景例句
Do you have any friends in the import or export field?
你有在进出口领域工作的朋友吗？
Marian is wearing a dress designed Paris.
玛丽安穿着巴黎设计的时装。
and we have to lower into the ground and haul out of the ground great lengths of drill pipe which are rotated by an engine at the top and are fitted with a cutting bit at the bottom.
我们必须把很长的钻杆一节节地钻入地下，然后再从地下拉出来。钻杆顶部安装的发动机带动钻杆旋转，它的底部装有钻头。