drop in

US /drɑːp ɪn/
UK /drɑːp ɪn/
"drop in" picture
1.

들르다, 방문하다

to pay a casual visit to someone without making a prior arrangement

:
Feel free to drop in anytime you're in the neighborhood.
근처에 오면 언제든지 편하게 들러.
I might drop in on my way home from work.
퇴근길에 들를 수도 있어.
2.

떨어지다, 감소하다

to decrease or fall suddenly and significantly

:
The temperature is expected to drop in the evening.
저녁에는 기온이 떨어질 것으로 예상된다.
Sales tend to drop in the off-season.
비수기에는 매출이 떨어지는 경향이 있다.