difficult and complicated disease

英 美
  • 疑难病
  • and conj.和;加;接着;那么
  • complicated adj.复杂难懂的;结构复杂的动词complicate的过去式和过去分词.
  • difficult adj.困难的;艰难的;(人)难对付的;不易相处的
  • disease n.疾病v.使…生病,感染