近日,美国卫生及公共服务部发布了第15版致癌物报告,新增8种致癌物,其中,幽门螺杆菌慢性感染被列为明确致癌物(known to be a human carcinogen)。Eight substances have been added to the US Report on Carcinogens, a cumulative rep
“风”的一些英语表达1. wind /wɪnd/ n. 风Winds are blowing across the land.土地上刮着一阵阵风。2. 大风/强风一般不说big wind, 而是strong windThe umbrella can't stand the strong wind.雨伞抵抗不了大风。It's rather