Tribometry
摩擦力测量术
🗣️ 情景例句
Philip had to go back to the hospital. Philip
必须要回医院。
Don't forget to put stamps on the letter before you mail it.
不要忘记在寄信以前把邮票贴在信封上。
What about vegetables, Sir? They usually go bad as soon as we are at sea.
那些蔬菜怎么办呢，先生？通常是刚一出海它们就会坏掉的。