Invaluably
adv. 無法評價, 非常貴重
??? 情景例句
OK, let me think.
好， 讓我想想。
Can I cancel this ticket?
我可以取消這張票嗎？
the young man has a glorious future before him and the old one has a splendid future behind him:
青年人有光輝燦爛的前景，而老年人的輝煌已成為過去。