日本一直在努力控制核危机，但是核辐射的蔓延已经引起了人们对核安全的担忧。
Japan has been trying to bring its nuclear crisis under control, but the spread of radiation has raised concerns about the safety of the nuclear energy.
卫生安全专家比尔·杜罗迪说，如果福岛核辐射不能很快得到控制，更多的国家会采取措施限制进口日本食品。
Canada, Australia and Russia have adopted similar bans on Japanese foods. Health and security researcher Bill Durodie said more countries are likely to follow.
已经达到危险级别的辐射污染使核电站工作人员和紧急反应人员无法安全地接近设施中四座受损反应堆，控制火势和评估危害程度的工作无法进行。
Dangerous levels of radiation are preventing nuclear workers and emergency responders from safely approaching the facility's four reactors to control fires and assess the extent of damages.
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