四: four窝: nest洞: hole; cavity二类窝洞: class 2 cavity六类窝洞: class 6 cavity三类窝洞: class 3 cavity五类窝洞: class 5 cavity一类窝洞: class 1 cavity第四类: fourth class四类忍: by patient meditation the窝洞壁: cavith wall窝洞底: cavity floor第四类程序: type 4 programming第四类业务: fourth window归结为四类: fall into four categories四类土壤: four types of soil; fourtypesofsoil新四类食物: new four food groups单面窝洞: simple cavity复合窝洞: complex cavity窝洞充填: cavity filling; cavityfilling窝洞垫基: cavity base窝洞清洗: cavity toilet; toilet of cavity窝洞涂剂: cavity varnish窝洞消毒: cavity disinfection; cavitydisinfection窝洞暂封剂: cavity temporary sealant
