v.繁衍,增殖( propagate的过去式和过去分词 );传播,宣传,普及;
例句:
The idea has been carefully propagated among the community.
这个想法悄悄在社团之中散布开来.
Materials through which no radiation is propagated are called opaque.
辐射线不能透过的物质叫不透明体.
Light is propagated through space in a straight line.
光以直线经由空中传送.