Introcession
[醫] 凹陷
??? 情景例句
I should stick to my work schedule.
我應該堅持我的工作進度。
Such a small mistake is pardonable.
不會追究犯了那么小的錯誤的。
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，從月球到地球的25萬英里所消耗的能量要比從地球表面進入地球軌道的200英里所耗能量少97%。