Root canal
[医] 牙根管
🧩 词语组成解析
root
[rut]
n. 根，根源;原因，本质;祖先;[乐]和弦基音;
vt. 使生根;使固定;根源在于;欢呼，喝彩;
vi. 生根;根除;
🗣️ 情景例句
They are above average 85. I'm among the upper third of my class.
我的平均成绩在85分以上。我是全班第三名。
Ill-gotten goods never prosper.
发横财，家不发
suggested an idea on which he had been working for many years to the British Government and industrial circles.
他向英国政府和工业界提出了他研究多年的一项计划。