You can also choose to turn on or off additional visual aids, the blue navigation dots, or the grid.

用户也能关掉额外的视觉辅助，蓝色导航点，以及照片上的网格。

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While the pilots should have been able to use visual references and navigation aids at the airport to judge if they were descending too quickly, reduced visibility from a burst of rain could have made landing more difficult, experts said.

WSJ: Weather Scrutinized as Possible Cause of Lion Air Crash