Treadlemill
脚踏传动式磨; 脚踏传动式试验台
🗣️ 情景例句
He is in conference right now.
他现在在开会。
Do you mind my smoking?
你介意我抽烟吗？
Portable boiling elements that can boil small quantities of water are useful when the right voltage of electricity is available.
如果有相配的电压，可以煮少量水的便携式热水装置是有用的。