Methyl (R)-2- [4- (3-chloro-5-trifluoromethyl-2-pyridyloxy)phenoxy]propionate是什么意思_Methyl (R)-2- [4- (3-chloro-5-trifluoromethyl-2-pyridyloxy)phenoxy]propionate在线翻译_英语_读音_用法_例句