Arm's-length
[经] 正常交易关系
🧩 词语组成解析
🗣️ 情景例句
you have so much energy and so many years of experience.
你精力这么好 ，又有这么多年的经验。
Do you live in the countryside?
你在乡间里居住吗？
To escape from the Earth in a rocket, one must travel at seven miles per second.
要乘坐一枚火箭飞离地球，火箭的速度要达到每秒7英里，