Powerhead
un. 动力水头；有效发电水头\\n
🗣️ 情景例句
You'll see the chicken house.
你会看到鸡舍。
If the blind lead the blind, both shall fall into the ditch.
问道于盲，无益于事。
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%。