Spiran
[机] 螺环化合物
🗣️ 情景例句
Max will always have a family member to watch over him
家里总会有一个人照顾Max
Do you like the soft touch of snowflakes on your face?
你喜欢柔软的雪花触到脸上时的感觉吗？
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%。