Multiplicative
a. 倍增的\\n[計] 乘法的
??? 情景例句
What channel?
哪個頻道？
Kept waving to her mother until the train was out of sight.
不斷地沖她的母親揮手，直到火車駛出了視線。
but custom, we have a way of thinking, is behaviour at its most commonplace.
至于風俗呢，只是些司空見慣的行為而已。