本期內容：

International investigators are hunting for those behind an unprecedented cyber-attack that affected systems in dozens of countries, as security experts sought to contain the fallout. The assault, which began Friday and was being described as the biggest-ever cyber ransom attack, struck state agencies and major companies around the world--from Russian banks and British hospitals to FedEx and European car factories.

Unprecedented：史無前例的
Cyber-attack：網絡攻擊
Contain：控制
Fallout：后果
Assault：攻擊
Ransom：贖金

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