成交客户用英语怎么说

成交客户用英语叫做 "closed customer" 或 "converted customer"。

来源：这个表达是商业用语，主要用于描述在销售过程中，已经成功达成交易的客户。

例句：

"We closed five new customers last month." (上个月我们新增了五个成交客户。)
"Our sales team is focused on converting potential customers into closed customers." (我们的销售团队专注于将潜在客户转化为成交客户。)