He was trying, for some unknown reason , to count the stars.
不知何故，他试图数星星。
Several years ago a rare species of bird for some unknown reason.
几年前，因为某种无人知晓的原因，这种稀有的鸟绝迹了。
The network is not ready for some unknown reason. Please try again shortly.
由于未知原因，网络尚未准备好。请稍后再试一次。
The network is not ready for some unknown reason. Please try again shortly.
由于未知原因，网络尚未准备好。请稍后再试一次。
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