1) Chinese puzzle
难答之事，难解之谜
2) The Difficulties of Understanding the Original Texts in Translation
译事理解之难
3) A Bitter pill to swallow
难堪之事
4) have a long row to hoe
难办之事
5) a difficult puzzle
难解的谜语
补充资料：译事
1.指翻译工作。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条