He spray, which is harmless to the environment, can be used to protect against disease, guard vineyards against fungal threats and coat the nose cones of high-speed trains, it has been claimed.
据称，一种对环境无害的喷雾能用来预防疾病、防范真菌对葡萄园的威胁，覆盖高速列车的鼻锥。
2
The second stage is the defense, the key task is prevents epidemic disease to occur, by that time, the guard drugs, will spray the tool and so on will be the demand key point;