Microvacuum
高真空
🗣️ 情景例句
We formed a very favorable impression of her.
我们对她的印象极好。
What's your favorite color?
你最喜欢的颜色是什么？
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%。