a fine line

US /ə faɪn laɪn/
UK /ə faɪn laɪn/
"a fine line" picture
1.

garis tipis, perbedaan halus

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.
Ada garis tipis antara kepercayaan diri dan kesombongan.
It's a fine line between being helpful and being intrusive.
Ada garis tipis antara membantu dan mengganggu.