drop in

phr

• ① 【口】偶然来访,顺道拜访
  • I'll just drop in and see how you are.我将顺道拜访,看看你的情况如何。
  • She used to drop in on us [at our house].她过去常来看我们[到我们家来]。
  • He often drops in to tea [for a chat].他时常顺便来喝茶[聊天]。

• ② 投入
  • She dropped a coin in and dialed.她投入一枚硬币,开始拨(电话)。