Selectivity
n. 选择性, 选择度\\n[化] 选择性
📖 牛津释义
selectivity
n[U]
1 quality of being selective 选择性.
2 the power of a radio to receive broadcasts from one station without interference from other stations （收音机排除干扰的）选择性能.
🗣️ 情景例句
Where are we going to be?
我们会在哪儿？
John stopped studying.
约翰停止学业了。
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%。