go off on a tangent
US /ɡoʊ ɔf ɑn ə ˈtæn.dʒənt/
UK /ɡoʊ ɔf ɑn ə ˈtæn.dʒənt/
1.
삼천포로 빠지다, 딴소리하다
to suddenly start talking or thinking about a different subject from the one you were originally discussing
:
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The professor tends to go off on a tangent during his lectures, making them hard to follow.
교수님은 강의 중에 삼천포로 빠지는 경향이 있어서 따라가기 어렵다.
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We were discussing the budget, but then he suddenly went off on a tangent about his vacation plans.
우리는 예산에 대해 논의하고 있었는데, 그가 갑자기 휴가 계획에 대해 삼천포로 빠졌다.