hot potato
US /hɑt pəˈteɪ.toʊ/
UK /hɑt pəˈteɪ.toʊ/

1.
烫手山芋, 棘手问题
a controversial issue or problem that is awkward or unpleasant to deal with
:
•
The issue of climate change has become a real hot potato in political debates.
气候变化问题在政治辩论中成了一个真正的烫手山芋。
•
No one wants to deal with that hot potato of a budget deficit.
没有人愿意处理预算赤字这个烫手山芋。