n.浮石，磨砖用的磨石...

In this study , F - K anti - stalking agents of fruits and vegetables were obtained from natural floatstone.用天然浮石为主要原料加工制得了F -K 蔬菜水果保鲜剂....

floatstone的音标：floatstone的英式发音音标为：['fləʊtstəʊn]floatstone的美式发音音标为：['floʊtˌstoʊn]...