gray-backed shearwater灰: ash背: body's back鹱: shearwater灰背鸥: larus schistisagus; slaty-backed gull灰背鸫: grey-backed thrush下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:灰背鹱，即可在微信中查询翻译
