drop in/by/around:順便來訪 … drop in ...(物):把...扔進 … drop in ...(物):把...扔進 … drop ...(a: 物) in ...(b: 物):把(a)扔在(b)裡 … drop off ...(a: 人) in ...(b: 地點等):讓(a)在(b)下車
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