Definition
The direction from which someone needs to look to see something.
指观察者为看见特定物体所需注视的方向。
I can't see the house because the trees are in the way; it's not within my line of sight.
我看不到那栋房子，因为树木挡住了视线；它不在我的视线范围内。
Good visibility is essential for drivers; they must maintain a clear line of sight.
良好的能见度对驾驶者至关重要；他们必须保持清晰的视线。
We need to move the obstruction to get a clear line of sight to the target.
我们需要移开障碍物，以便对目标有清晰的视线。