custom是可数的。英文单词custom可作名词和形容词两种词性，作为名词时，是可数名词，含义为“风俗”、“习俗”、“个人的习惯”、“惠顾”，复数为customs；作为形容词时，含义为“定做的”。
custom的中文含义及用法介绍
1、作为名词时，是可数名词，译为风俗;习俗;(个人的)习惯，习性，惯常行为;(顾客对商店的)惠顾，光顾。
例句：It's a local custom .
这是当地的风俗习惯。
It is the custom in that country for women to marry young.
女子早婚是那个国家的风俗。
As was his custom, he knocked three times.
他敲了三下，这是他的习惯。
We've lost a lot of custom since prices went up.
自从价格上涨以来我们失去了很多生意。
The custom of lighting the Olympic flame goes back centuries...
点燃奥林匹克圣火的习俗可以追溯到几个世纪前。
It was his custom to approach every problem cautiously...
他习惯谨慎地处理每一个问题。
You have the right to withhold your custom if you so wish...
如果你这么不想来，你可以不再光顾。
The new gas station would like to have your custom.
新加油站竭诚欢迎你经常惠顾。
You have the right to withhold your custom if you so wish
如果你这么不想来，你可以不再光顾。
2、作为形容词时，译为定做（制）的。
例句：So these things are custom fitted?
所以这些面具都是定做的？
Invest only in custom scripts.
只投资自己定做了脚本的站。
And according to the characteristics of various industries to design custom non-standard equipment.
并可根据各行业的特点要求设计定做非标准的设备。
