学生常常赶数百英里的路来到这里。Students often travel hundreds of miles to get here.数年前，艾莱的农场就实现了机械化。Mechanization happened years ago on the farms of Islay.他参加过多次比赛，赢得了数枚金牌。He entered for many competitions, winning several gold medals....
Don't make a noise .别出声。If you make a noise, you'll scare off the animals.如果你弄出声响就会把动物吓跑.The bus was late again today ! Let's make a noise to the company about it.公共汽车又晚点了,我们向公司提意见去....
纤维素是带有好多羟基的不幼链环型布局的聚合物.Cellulose is a very polyhydroxylated of long - chain - type structure of the polymer.使用的催化剂对醇 羟基 的氧化具有高度的选择性并有很高的转化率.These reactions catalyzing oxidation of alcohol - OH groups have high yield and ...