Harmlessness
无害化
✅ 同义词
📖 牛津释义
harmlessness
n [U].
🗣️ 情景例句
No way!
不行！
How are you doing these days?
这些日子你怎么样？
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%。