1. It was such an irresponsible enterprise that it added tripolycyanamide to its milk powder, which tragically led to many babies' developmental disorders and ruined many families' happiness. 这是一个不负责任的企业，在奶粉中添加三聚氰胺，悲剧地导致了很多婴儿发育障碍，破坏了很多家庭的幸福。
2. He died tragically young. 他英年早逝。
3. Tragically, his wife was killed in a car accident. 他的妻子在车祸中不幸身亡。
4. Tragically, she never saw the completed building because she died before it was finished. 不幸的是，她未能见到完工的大楼，因为她在大楼竣工前就去世了。
5. The rescue attempt failed tragically. 营救行动不幸失败。
