Dadd
[人名] 达德
🗣️ 情景例句
A large, please.
请给我大杯的。
You go first. I'll catch up later.
你先走，我随后就到。
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%。