Sourced
a. 有來源的, 有出處的
??? 情景例句
Don't be lazy, the older you get, the harder it will be to learn.
別偷懶，年紀越大，學起來就越難。
He plays violin just for enjoyment.
他拉小提琴只是為了自娛自樂。
Of course!
當然了！