感到~ feel regret || 永远~ regret forever || ~地说 regretfully say regret 
bedauert bedauern 
rimpianti rimpianto 
regrette regret 
lamenta lamenta 感到~ feel regret || 永远~ regret forever || ~地说 regretfully say 44 遗憾 [遺-] yíhàn (leave-regret) regret 16 后悔 [後-] hòuhuǐ (later-regret) regret: ~一辈子 regret your whole life || 深深~ deeply regret || ~发脾气 regret getting angry '
Thật không may, tôi không thể đến. 
Unfortunately, I can't come.
Leider kann ich nicht kommen.
แต่ฉันไม่สามารถมาได้
不幸的是，我不能来。