He tried to calm them, but was greeted with shouts of derision.他试图让他们平静下来，但却招致他们大声的嘲笑。He gave a snort of derision.他哼了一下鼻子表示嘲笑.Children dread the derision of their playmates.孩子们害怕受到同伴的嘲笑....
Alternatively sows can be injected with long - acting penicillin at point of farrowing.或者,可以在分娩时给母猪注射 长效 青霉素.Products: Farrowing Bed dringker Plastic Floor Exhaust Fan cooling Pad and so on.产品主要有: 产床、保育床、定位栏、地板、风机、水帘...