a viral infection病毒性感染He is suffering from viral meningitis.他患病毒性脑膜炎.A variety of viral agents cause aseptic meningitis or meningoencephalitis.各种病毒性因子可引起无菌性脑膜炎或脑膜脑炎....
Emergency cooling systems could fail and a reactor meltdown could occur.紧急冷却系统有可能失灵,核反应堆有可能发生堆芯熔毁。Fill the cooling system with antifreeze as a protection against frost.在冷却系统里加防冻剂以防止霜冻.Large quantities of water are needed...
The fire won't burn because the flue is blocked up.因烟道堵塞火烧不起来.The flue has become sooted up.烟道里都是黑灰.If the flue overdraws, all the heat goes right up the chimney.如果风管抽风过度的话, 热量就会从烟囱直接跑掉了....