Keylight
n. [摄]主光
🗣️ 情景例句
What are you working on?
你在干什么？
Do not wash dirty linen in public.
家丑不可外扬。
Since its discovery, it has become a sort of potholers' Everest.
自从被发现以后，这个洞成了洞穴探险者的珠穆朗玛峰，