The worst turbulence is associated with thunderstorms and they are visible to the naked eye or with weather radar which picks up the size of water droplets.
最恶劣的乱流还伴有雷暴雨，肉眼或天气雷达可以发现。天气雷达可以估测出雨滴的大小。
As 1901 drew to a close, however, the Ms. Proposal faded from the public eye - though it seems to have made enough of an impression to lurk just below the radar for decades to come.
不过，到了1901年底，关于Ms .的提议就在公众眼前消失了——虽然它似乎已经造成足够的印象足以潜伏在大家的眼线下达20年之久。
The larger trails can be seen with the naked eye, but even the smaller meteors down to 15th magnitude, which are more common, the left trails that provide radar targets.
大的流星尾巴可被肉眼看见，但最经常出现的是那些亮度相当于15等星以上的小尾：这些小尾成了雷达探测的目标。
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