One of the biggest threats is from Enterobacteriaceae, a family of germs that naturally lives in the gut and includes E. coli, the CDC says.
该中心说，最大的威胁之一是肠杆菌，这是一个自然栖居于肠道的病菌族群，其中包括大肠杆菌。
They also look out for signs of illegal entry, such as broken fences where a poacher may have sneaked in. Poaching remains one of the biggest threats to tiger conservation.
他们也留意是否有非法进入的痕迹，如偷猎者破坏围栏溜进公园。
Tobacco use is one of the biggest public health threats and one of the main risk factors for a number of chronic diseases, including cancer, lung diseases and cardiovascular diseases.
烟草使用是最大的公共卫生威胁之一，也是许多慢性疾病的主要危险因素之一，这包括癌症、肺部疾病以及心血管疾病。
Worms are now one of the biggest security threats facing businesses and domestic users, said Microsoft.
微软认为，蠕虫病毒是企业和家庭用户现在面临的最大安全隐患之一。
The world health Organization (WHO) is not exaggerating when it says tobacco use is one of the biggest public health threats the world has ever faced.
世界卫生组织表示，吸烟是全世界面临的最大的公共健康威胁，这毫不夸张。
The world health Organization (WHO) is not exaggerating when it says tobacco use is one of the biggest public health threats the world has ever faced.
世界卫生组织表示，吸烟是全世界面临的最大的公共健康威胁，这毫不夸张。
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