late 14c., of persons, "apt to change, fickle," from Old French variable "various, changeable, fickle," from Late Latin variabilis "changeable," from variare "to change" (see vary). Of weather, seasons, etc., attested from late 15c.; of stars, from 1788.
variable (n.)
"quantity that can vary in value," 1816, from variable (adj.) in mathematical sense of "quantitatively indeterminate" (1710). Related: Variably; variability.
雙語例句
1. The drill has variable speed control.
這鉆機有變速控制。
來自《權威詞典》
2. The variable weather is a great trial to me.
這種多變的天氣真是讓我受不了.
來自《簡明英漢詞典》
3. He is of a variable mood ; he never finishes what he starts.
他這個人朝三暮四,做起事來總是虎頭蛇尾.
來自《現代漢英綜合大詞典》
4. Speed was a variable in the experiment.
在該實驗中速度是個變數.
來自《簡明英漢詞典》
5. The speed of the windscreen wipers is variable.