Friction gearing
[机] 磨擦传动装置
🧩 词语组成解析
n. 传动装置\\n[经] 比例结合, 齿轮作用
🗣️ 情景例句
Tom doesn't have a steady girlfriend at the moment.
汤姆眼下还没有一个已确定关系的情侣。
No answer.
没有人接电话。
and so the tools of long ago have remained when even the bones of the men who made them have disappeared without trace.
因此，尽管制造这些工具的人的骨头早已荡然无存，但远古时代的石头工具却保存了下来。