当然还有其他原因：在夏天、正午、高海拔和靠近赤道的地方，紫外线特别强烈。
And there are other factors: UV is strongest in the summertime, at midday, at higher altitudes, and close to the equator.
在闷热蒸腾的夏天正午。
在晴日里，特别是在夏天，海员们能够利用正午头顶上的太阳导航。
On a clear day during the summer the sailors could use the sun at midday to navigate by.
在闷热蒸腾的夏天正午，你高贵的微笑化散了抱怨，高高的太阳也不敢与你的耐力奋战。
In the sweltering haze of summer-noon, your dignified smile diffuses complaints. The high sun would shy to fight your endurance.
在闷热蒸腾的夏天正午，你高贵的微笑化散了抱怨，高高的太阳也不敢与你的耐力奋战。
In the sweltering haze of summer-noon, your dignified smile diffuses complaints. The high sun would shy to fight your endurance.
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