-trix
suf. [阴性名词词尾,相当于-or]表示女性...者：aviatrix, executrix; [数学]点,线,面：directrix [亦作-trice]
🧩 词语组成解析
abbr. 三重指数平滑移动平均线（Triple Exponentially Smoothed Moving Average）
🗣️ 情景例句
We had a cat when I was eight years old.
我八岁时养过一只猫。
Why are you squealing, my friend?
朋友，你为什么要发出尖叫？
I used to travel by air a great deal when I was a boy.
我在幼年的时候，曾多次乘飞机旅行。