custom是可数名词，复数是customs。作名词时意为“习惯，惯例；风俗；海关，关税；经常光顾；（经常性的）顾客”。作形容词时意为“（衣服等）定做的，定制的”。

custom例句

1、It was his invariable custom to have one whisky before his supper.

晚饭前来杯威士忌，这是他一直以来的习惯。

2、Furniture can also be custom-made to suit your own requirements.

你也可以按照自己的要求定制家具。

3、The married women of Shitamachi maintained the custom of blackening their teeth.

下町的已婚女性还保留着把牙齿涂黑的习俗。

4、Can you tell me the origin of this custom?

你能告诉我这个习俗的由来吗？

5、What should we do to revive this old custom?

要恢复这个古老的风俗，我们应该做些什么？

6、We need to know the custom of this country, so that we would not displease anyone.

我们需要知道这个国家的习俗，这样我们就不会惹怒任何人了。