a fine line
US /ə faɪn laɪn/
UK /ə faɪn laɪn/
1.
紙一重の差, 微妙な違い
a subtle distinction or difference between two things that are very similar but can have very different consequences
:
•
There's a fine line between confidence and arrogance.
自信と傲慢さの間には紙一重の差がある。
•
It's a fine line between being helpful and being intrusive.
助けになることと、おせっかいになることの間には紙一重の差がある。