Core barrel
[机] 心骨管
🧩 词语组成解析
core
[kɔ:]
n. 中心，核心，精髓;果心，果核;[地质学]地核;[计] 磁心;
vt. 去（果）核，挖去…的果心;提取岩芯（样品）;
barrel
['bærəl]
n. 桶;一桶之量;圆筒，活塞筒，滚筒;圆筒;
adj. 桶状的;
vt. 装进桶里，放进桶里;
vi. 高速行驶;
bar 木棒,障碍#词根助记：bar木条,桶是用木条做成的
🗣️ 情景例句
Thank you, sir.
谢谢。
He went pale at the news.
听到消息，他脸色发白。
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。