Blitheness
n. blithe（快乐的）的变形
🗣️ 情景例句
He told me
他告诉我
The years teach much which the days never know.
学问集年而成，而每日不自知也。
What about the Natural History Museum? So far as I know, it's free.
去自然历史博物馆怎么样？据我所知，那儿是免费的。