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[经] 未付帐目
🧩 词语组成解析
🗣️ 情景例句
Have you ever studied French?
你学过法语吗？
Pardon me. I wonder if you could tell me how to get to Mott Street?
对不起，不知道你能否告诉我到莫特街怎么走？
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。