| 单词 | petrel |
| 释义 | petrel noun[C] uk/ˈpet.rəl/us/ˈpet.rəl/abirdwith acurvedbeakthatspendsmost ofitslifeflyingover thesea 海燕 pilipenkoD/ iStock/Getty Images Plus/GettyImages Birds found by or on the sea
Examplesofpetrelpetrel The protection of southern giant petrels should be increased by having a minimum distance of 50 m for all visitors. From theCambridge English Corpus The current book is a work dedicated to three families of seabirds, namely albatrosses, petrels, and shearwaters. From theCambridge English Corpus Therefore, the lower natural disturbance boundary was used as a reference for identifying the recommended minimum distance to southern giant petrels. From theCambridge English Corpus During nest counts, the behaviour of southern giant petrels in terms of relevant distances to tourists was also observed. From theCambridge English Corpus The only monitoring study on a burrowing species since cats were eradicated has been for white-chinned petrels. From theCambridge English Corpus In 1982 the author assisted in a project on the chemical composition of bluepetrelchick guano. From theCambridge English Corpus At this time of year, prions and petrels are active. From theCambridge English Corpus The populations of storm petrels were estimated by nocturnal calls of the birds. From theCambridge English Corpus Four pairs of southern giant petrels in a frequently visited area of the island were compared with four in a rarely visited area. From theCambridge English Corpus This perhaps unparalleled breadth of comparative study on petrels undertaken over 30 years is reflected in the general chapters, as important insights often come from personal experience. From theCambridge English Corpus Cape petrels breed on one rock in the rarely visited south of the island. From theCambridge English Corpus Skuas, snow petrels, and a solitary giantpetrelenlivened the trip. From theCambridge English Corpus Southern giant petrels moved their breeding sites to the western part of the island, which could have been caused by increased visitation. From theCambridge English Corpus A historical background to the group is given, and we learn that the first petrels can be found in fossils aged between 40 and 45 million years old. From theCambridge English Corpus Behavioural and heart-rate changes of southern giant petrels and skuas were investigated in detail in order to have a scientific basis for the revision of minimum distances to these species. From theCambridge English Corpus These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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