| 单词 | mother-of-pearl cloud |
| 释义 | > as lemmasmother-of-pearl cloud mother-of-pearl cloud n. [after Norwegian perlemorsky (H. Mohn 1893, in Forhandl. i Vidensk.-Selsk. i Christiania 1)] Meteorology = nacreous cloud n.; cf. noctilucent adj. 2. ΘΚΠ the world > the earth > weather and the atmosphere > weather > cloud > [noun] > a cloud > other specific types of cloud ice cloud1830 nacreous cloud1909 mother-of-pearl cloud1932 rotor cloud1954 wave cloud1959 1932 Q. Jrnl. Royal Meteorol. Soc. 58 307 The remarkable stratosphere clouds which the late Professor Mohn called mother-of-pearl clouds again appeared over Scandinavia several times during the months of January and February this year. 1957 F. H. Ludlam & R. S. Scorer Cloud Study 69 Mother of pearl clouds are rare. They have been seen most often in Norway (but occasionally also in Scotland, Iceland and Alaska), and then only in the months between November and March. 1996 Observatory 116 140 Once or twice you referred to luminescent clouds... I'm merely saying that they're essentially nothing new. Sturmer started studying them back in the 1920s, and then they were called ‘mother-of-pearl’ clouds. < as lemmas |
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