Professionals
n. 专业人员（professional的复数）
🗣️ 情景例句
Keep the meter running.
继续打表吧。
I caught you!
给我逮到了吧！
it requires 97 per cent less energy to travel the quarter of a million miles from the Moon to Earth-orbit than the 200 mile-journey from Earth's surface into orbit!
因此，从月球到地球的25万英里所消耗的能量要比从地球表面进入地球轨道的200英里所耗能量少97%。