主要问题在于它们目前只实现了一个很窄的最佳观看位置——你不能在任何一方移动太远而导致不能保留图像而导致最好的情况下也会图像模糊或在最坏的情况下令人头晕作呕(本句请大侠指正……)。
The chief problem: They tend to have a very narrow viewing sweet spot-you can't shift too far to either side without being left with an image that's blurry at best and nauseating at worst.
没有饮食计划，你只是模模糊糊地知道什么应该吃，而不能按照一个计划去执行。这意味着按照计划去购买食材，按照计划烹饪，按照计划饮食。
Without this, you'll just know what to eat, vaguely, but you need to actually make a plan and implement it (meaning, go shopping for the foods in the plan and actually cook the foods and eat them).
我们认为这个讨论必须进行，而不能只是模糊的觉得GIS 是个好东西。
We can't rely on the warm and fuzzy feeling that GIS is a good thing.
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