单词	blue billy
释义	blue billy noun : a petrel (Pachyptila desolata) of the southern oceans with a bluish back and white underparts Word History Etymology probably from the name Billy
随便看	spheciuses sphecoid Sphecoidea sphecoideae sphecoideas sphecoides sphecoids sphecothereses sphecotheresses spheges Sphegidae sphen sphen- Sphenacanthocephala sphenacodont Sphenacodontia sphendone sphendones sphene sphenes sphenethmoid sphenion sphenisci Spheniscidae spheniscidaes

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