Single is simple,double is trouble!If you want sth,please wo

Single is simple,double is trouble!If you want sth,please wo single is simple,double is trouble Single is simple,double is trouble. single is simple. double is trouble是什么意思? ‘Single is simple,double is trouble,triangle is terrible!’ single is simple,double is trouble,triangle is terrible到底怎么翻 doubie is trouble,single is simple single is sumple double is trouble single simple;double bother;three trouble. Single is simple,drouble is trouble的是什么意思 simple is simple ,double is doule 汉语意思是什么?;please tell me th 类似one is simple,double is trouble押韵的英文句子