在图象显示期间,一幅图象由另一幅图象取代。同一屏幕上,两幅图象的可见部分有一分界线,移动这一分界线,把一幅图象逐渐抹掉(划出),逐渐显示另一幅图象(划入)。 The replacement of one image by another during a period of time by the motion of a boundary separating the visual parts of the two images.
沟渠,排水沟,水道在地面上狭长的沟渠或细沟,用于灌溉、排水或用作分界线 A long narrow trench or furrow dug in the ground, as for irrigation, drainage, or a boundary line.
有一道树篱在她的土地和我的土地之间形成了分界线。 A hedge forms the division between her land and mine.
这道栅栏是我的地和她的地的分界线。 The fence marks the boundary between my land and hers.