... day sighting 释义：白昼可见度 vsty 释义：[=visibility]可见度,视见度 visibility curve 释义：可见度曲线,视力曲线 ...
权威例句
1.
At the time of his death police said the last confirmed sighting of Mr Roberts had been the day his court appearance was reported but they said they were keeping an open mind about the motive.
BBC: John Roberts murder police interview 300 people
2.
On my third day at the camp (and as many days without a sighting) Bakkes and I sat on canvas chairs overlooking a vast plain, our view framed by the Entendeka mountains.
BBC: Saving rhinos in Namibia
3.
There was an unconfirmed sighting of Mr Roberts at nearby Plwmp post office on the day of his disappearance.