Colin powell
科林·鲍威尔（美国第一个黑人国务卿）
🧩 词语组成解析
n. 科林（男子名）
n. 鲍威尔（英国物理学家）
🗣️ 情景例句
Good night, Marilyn.
晚安， Marilyn。
He knows much who knows how to hold his tongue.
懂得缄默的是明白人。
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。