Haynes's operation
[医] 黑恩斯氏手术(治急性化脓性脑膜炎)
🧩 词语组成解析
🗣️ 情景例句
What do you do?
你现在做什么工作？
Have you heard from Marry?
你收到玛丽的来信吗？
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%。