Chronic nonspecific ulcerative colitis is a disease with exacerbations and remissions.慢性非特异性溃疡性结肠炎这种病可以恶化亦可缓解.Interferon is probably the most significant nonspecific antiviral substance.干扰素可能是最重要的一类非特异性抗病毒物质.In some case...
Chronic nonspecific ulcerative colitis is a disease with exacerbations and remissions.慢性非特异性溃疡性结肠炎这种病可以恶化亦可缓解.In some cases of nonspecific enteritis positive reactions were observed.在一些非特异性肠炎病例中,观察到阳性反应.Necropsy of the f...
登圣母峰绝不是一次轻松的旅途.Climbing Mt. Everest is anything but a pleasure trip.十七 岁 的尼泊尔高中生坦巴? 伽利 登上圣母峰8848公尺高的峰顶.Temba Tsheri, a 17 - year - old Nepalese high - school student , has reached the 8 , 848 - meter summit of Mount Ever...
To keep their bees from wandering, beekeepers feed them sugar solutions.为了防止蜜蜂迷路，养蜂人给它们喝糖水。A dark cloud of bees comes swarming out of the hive.黑压压的一大群蜜蜂从蜂巢中飞出来。Some solitary bees make their nests in burrows in the soil.一...