查词历史：

a hot potato a home from home a hog in armour a group of a grey mare a great hand at a great distance off a graveled path a good distance off a gold brick a gallery shot a friend in court a foregone conclusion a fly on the wheel a fish a finger in the pie a fallen angel

a hot potato
生词本

n.

1. Many school boards found segregation a hot potato in the early 1960s.
在60年代初，许多学校部门都觉得按水平分班是一个棘手的问题。

来自《简明英汉词典》