Gravelling
铺砾石
🗣️ 情景例句
Do you ever lie to your boyfriend?
你骗过你男朋友吗？
The used key is always bright.
常用的钥匙总是光亮的。
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%。