Acephalus monopus
[医] 单腿无头畸胎
🧩 词语组成解析
[医] 无头畸胎
[医] 蛋足畸胎
🗣️ 情景例句
I don't have time to take any elective classes.
我没有时间去上任何选修课。
What alternatives do I have?
我有什么选择？
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%。