Cephalanthin
风箱树素
🗣️ 情景例句
Thank you for calling us.
谢谢你打电话给我们。
Good. I'll take it right now, if possible.
好，如果可能的话，我现在就要租一辆。
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%。