Rudistids
[古生]厚壳蛤类
🗣️ 情景例句
I'd like to propose a toast to Ms Lin Editor of the Year.
我要请大家为林小姐敬一杯酒，她获选"年度最佳编辑"。
I appreciate your helping me.
感谢你的帮助。
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。