difficult to doing

意思翻译 难以做某事 相似词语短语 difficult to keep───难以保存 difficult to understand───深文奥义；莫测高深；艰深；艰深的 difficult───adj.困难的；不随和的；执拗的 difficult to do───难以做某事 prefer doing to doing───宁愿做……也不愿做…… more difficult───更难的（difficult的比较级） difficult tasks───艰巨的任务 approaches...