-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
You should take the number 1 subway.
应当搭一路地铁。
He that runs fastest gets the ring.
捷足先登。
What are you doing?
你在干什么？