Downwind
大学 Collegea. 顺风的\\nadv. 顺风
🔴 反义词
🗣️ 情景例句
It is special. Happy anniversary.
确实很特别。结婚周年快乐！
Don't forget to write to me.
不要忘记写信给我。
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%。