慨叹

bù shèng kǎi tàn

不胜慨叹

sigh with deep emotion

shì jiàn guò hòu zhè me duō nián cái huò zhī dàng shí de nèi qíng shí zai lìng rén kǎi tàn

事件过后这么多年才获知当时的内情，实在令人慨叹。

It's fascinating to get the inside story so many years after this incident.