短语词组短语bulb and stem vegetable 球茎与茎秆蔬菜Olfactory bulb neural stem cells 嗅球神经干细胞onion bulb stem 洋葱鳞茎stem bulb rotten disease 球茎腐烂病pollinator pollen stem bulb 授粉昆虫给茎球状物授粉Stem and bulb nematode 鳞球茎茎线虫stem -bulb rot 球茎腐烂 返回 bulb stem