Hardware maintenance
[计] 硬件维护, 硬件维修
🧩 词语组成解析
🗣️ 情景例句
Not so good, Grandpa.
情况不太好， 爷爷。
What will you do this weekend?
这周末你将干什么？
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%。