例句與造句

1. So first we hear the direct sound ; then , a short time later , a number of discrete reflections return from the various surfaces in the room
   所以首先我們先聽到直達(dá)聲；然后，一個短時間的延遲后，一連串不連續(xù)的反射聲在房間的不同反射面之間反射回來。
2. It's difficult to find direct sounder in a sentence. 用direct sounder造句挺難的