On-sight flash 攀登者攀登前没有任何关于这条路线的信息
sight flash
看到闪电
以上为机器翻译结果，长、整句建议使用 人工翻译 。
As the shadows pass by, a flash, then in the sight dissipated.
就像擦肩而过的人影，一晃，便在视线中消散了。
youdao
When he caught sight of the count, there was a flash like lightning in his eyes.
他喊道。当他看见伯爵的时候，他的眼中闪出了电光。
Found only in these woods, the large bird is a beautiful sight, with its distinctive green and blue colouration, crested head feathers and, when in flight, the red flash of its wings.
BBC: Step back in time in South Africa��s Garden Route
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