慨叹

慨叹	kǎi tàn	to sigh with regret / lament
慨	kǎi	(archaic) to sigh
慨	kǎi	(bound form) impassioned; deeply affected (esp. with indignation or sorrow) / (bound form) generous; magnanimous
叹	tàn	to sigh / to exclaim
叹	tàn	variant of 叹