die, decease, expire, perish, pass away
这些动词或短语动词均有死或死亡之意。
die : 最普通用词，指某人或某物失去生命而永远不存在。
He died a millionaire.(他死时是个百万富翁。)
decease : 正式用词，多指法律上的用语。
Upon his decease the house will pass to his wife.(他死后房屋归他太太所有。)
expire : 委婉用词。从本义从肺部吐出气来引申为吐出最后一口气，断气而死。
He expired at midnight.(他在午夜死去。)
perish : 书面用词，多指夭折或不幸暴亡。
Hundreds of sheep perished that year because of drought.(那年由于干旱, 几百头羊突然死去。)
pass away是die的委婉用语。
He passed away peacefully.(他安详地去世了。)
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