Kermel
克密尔聚酰胺纤维
🗣️ 情景例句
We had a cat when I was eight years old.
我八岁时养过一只猫。
I'm glad I'm not in his shoes!
我很高兴我不是处在他的境遇。
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%。