“投币”不是throwcoin，英语应该怎么说？

乘坐地铁需要买票的话，你可以刷卡，或者需要“投币”买票，那英语该怎么表达呢？
实用对话——乘坐地铁到达你的目的地，应该怎么说？
You:I"d like to buy a one-way ticket to the museum, how to use the ticket machine?
Passer-by: Choose your destination and insert coins here.
You:Thank you. And which platform should I go to get there?
Passer-by:Platform 7. When you arrive, go through exit 2 and you"ll get there.
You: Thank you so much.
知识点详解：

01. I"d like to buy a one-way ticket to the museum, how to use the ticket machine?· ticket machine：售票机
买车票的必备句型：
I"d like to buy ... ticket to... (目的地)
· 单程票
英：single ticket
美：one-way ticket
· 往返票
英：double ticket
美：return ticket