Definition: a custom that has existed for a long time Level: C2
婚姻是一种古老的习俗制度。
Marriage is an ancient ___institution.
在许多家庭中，周日午餐是一种备受珍视的传统。
Sunday lunch is a cherished ___institution in many families.
喝下午茶的仪式是一项典型的英国传统。
The ritual of afternoon tea is a quintessential British ___institution.
