Obscures
v. 使…模糊不清, 掩蓋( obscure的第三人稱單數 )
??? 情景例句
I think so.
我想是的。
Knowledge will not be aquired without pain and application.
不花力氣，不下功夫是得不到知識的。
Yes! They're having a good time.
是呀！他們玩得很痛快。