在美国艾奥瓦州得梅因地区社区学院的几间教室内上课的学生于4月26日时突然被校方紧急疏散到了安全地带，而具体原因则是因为一个看上去颇为可疑的包裹使得学校管理者变得万分紧张。

Several classrooms at Des Moines Area Community College were evacuated after college officials became nervous about a suspicious package.

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通常杀毒软件寻找可疑的行为然后试图判断行为的原因。

Conventional av software looks for suspicious behaviour and then tries to determine what's causing it.

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他的去世原因很可疑。

The cause of his death is suspicious.

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