回头客的英文：
return customer

参考例句：

frequenter;Repeater (of a shop,restaurant,etc.);regular (customer)
回头客

Nearly 60% of our bookings come from repeat business and personal recommendation.
我们近60%的订单来自于回头客和熟人介绍。

With such friendly people, Vietnam is a country that can lure tourists back again and again.
由于有这些热心友好的朋友，越南这个国家的旅游业将会吸引更多的回头客。

return是什么意思：
v. 带回，放回，恢复，回到
n. 回来，归还，回报
adj. （票）双程的，往返的；（旅途）返回的，返程的

The return of a prodigal
回头浪子

Return ReceiptsSettings for requesting or returning receipts
返回收据有关收据的请求或返回有关的设置

To return disappointedly; defeated.
铩羽而归

The groom returned to the carriage.
马夫回到马车那儿。

Blair will return to London tonight.
今晚布莱尔将返回伦敦。

customer是什么意思：
n. 顾客；家伙

Once is no custom
一次不成例

Customize a van.
定做一辆大马车

Customs officers are in charge of the customs inspection.
海关官员负责海关检查。

credit a customer with 8
把8英镑记入客户贷方

Our baggage has cleared customs.
我们的行李已通过海关检查。