Dapperling
n. 短小精悍的人
🗣️ 情景例句
Please check to be sure you have your belongings.
请记得带您的行李。
You should wear a something warm, It's chilly today.
你应该穿暖和一些的衣服，因为今天很凉。
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%。