Definition: a long, narrow hole that you put something into, especially money Level: C1
把硬币放进投币口。
Put the coin in the ___slot.
不是插入硬币，而是把卡插入槽中，然后拨号。
Instead of inserting a coin, you put your card in a ___slot and then dial the number.
停车计时器有一个投币口，用于支付停车费。
The parking meter has a ___slot for coins to pay for your ticket.
