custom作為風俗是可數嗎[朗讀]

custom（風俗,習慣）是不可數名詞。
例句：
the custom dates back hundreds of years
這一習俗可以追溯到幾百年前。
as was his custom,he knocked three times
他敲了三下，這是他的習慣。
擴展資料。
this particular custom has its origins in wales
這一特殊風俗起源於威爾斯。
it was his custom to approach every problem cautiously
謹慎地處理每個問題是他的習慣。
the custom of lighting the olympic flame goes back centuries
點燃奧運聖火的風俗可追溯到幾個世紀前。