1) a thorny subject [problem
难题; 棘手的题目[问题]
2) a thorny problem, subject, issue, etc
棘手的问题.
4) formidable problems
棘手问题
1.
The reasons and disposal measures of formidable problems in the process of treament and diagnosis of biliary and pancreatic disease with endoscope;
胆胰疾病内镜诊治中棘手问题析因和应对措施
5) skate over thin ice
谈论棘手的问题
6) skirt around [ round ] an awkward question
回避棘手的问题
补充资料：难题
1.不易解答的题目。 2.不易解决的问题。
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