But if the observer shifts position and look "down" the wall, then these lines cease to appear parallel and level with the ground and instead appear to come together as they recede.
但是如果观察者移动一下位置，面对着墙(这时墙就是“俯视”自己)，那么这些线条就不再是和地面平行了，相反，它们好像自己后退了一样合到了一起。
Although the reflectivity is small near the condition of resonance, the large negative gh shifts can be more easily detected in comparison with the shift from a plane-parallel film in vacuum.
尽管接近于共振时，反射率比较小，但是和平面平行薄膜相比，楔形薄膜所产生的大的负gH位移更容易探测。
It is not coherent if it has faulty parallel constructions, pronouns with ambiguous reference, dangling or misplaced modifiers, confusing shifts in person and number, or in voice, tense, and mood.
如果有错误的并列结构，指代不明，修饰悬挂或错位，人和数字变动、语态、时态、语气混乱，这就是不连贯句。
It is not coherent if it has faulty parallel constructions, pronouns with ambiguous reference, dangling or misplaced modifiers, confusing shifts in person and number, or in voice, tense, and mood.
如果有错误的并列结构，指代不明，修饰悬挂或错位，人和数字变动、语态、时态、语气混乱，这就是不连贯句。
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