Pater patriae
[拉]国父
🧩 词语组成解析
n. 父亲
🗣️ 情景例句
Away from the telephones and account books.
远离电话和帐簿。
No class!
真没水准！
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%。