Indiscoverable
a. 难以发现的
🗣️ 情景例句
To do what?
做什么呢？
A young married couple moved in next door to us.
一对年轻结婚的夫妇搬到了我们的隔壁。
but custom, we have a way of thinking, is behaviour at its most commonplace.
至于风俗呢，只是些司空见惯的行为而已。