threepennyadj.三便士的;无价值的;便宜的
threenum.三n.三;三个adj.三个的
three-dimensional directivity三维指向性
three-phase watt-hour meter三相电度表
three thousand and twenty three(=3023) 三千零二十三
three-D migration in one step一步法三维偏移
three-dimensional space model三维空间模型
three kinds of chronic diseases三种慢性病
three -phase unbalance system三相非平衡系统
three thousand and ninety eight(=3098) 三千零九十八