词汇	bow tie nebula
释义	bow tie nebula 蝴蝶结星云
随便看	artificial simulation artificial simulation entironment test-chill artificial simulation environment test-chill artificial selection artificial sense organ artificial sensitive organ artificial sera artificial series artificial serum artificial service artificial sets on fire artificial shark's fin artificial shift erosion artificial short crack artificial shoulder joint Artificial shrubbery artificial sight artificial signal artificial signal source artificial signs artificial silica sand artificial silicon retina artificial silk artificial silk black artificial silk cloth