柯林斯词典petrel /ˈpɛtrəl/ (petrels) 1. N-COUNT A petrel is a type of sea bird that often flies a long way from land. There are many kinds of petrel. 海燕 返回 petrel剑桥词典a bird with a curved beak that spends most of its life flying over the sea 海燕 返回 petrel