Defuser
（危险局面的）调解人
🗣️ 情景例句
Thanks, Dad.
谢谢你 ，爸爸。
Could you change my flight date from London to Tokyo?
请你更改一下从伦敦到东京的班机日期好吗？
he identifies himself with its centre of gravity, its mass, its weight;
他把自身和物体重心、质量、重量融为一体。