Dene
n. 沙地, 沙丘, 有森林的陡谷
🗣️ 情景例句
How long has he held office?
他已任职多长时间了？
No longer pipe, no longer dance.
运不逢时，事不得意。
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%。