Sipeimine
[化] 西贝母碱
🗣️ 情景例句
Oh, poor baby.
噢， 可怜的小宝贝。
And the problems that some of us have had in the past year.
和去年我们一些人遇到的问题。
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%。