What we have to do is make sure we know what these are and take into account all the possible variables
出自-2013年6月聽力原文
柯林斯高階英漢雙解學習詞典釋義
ADJ-GRADED
多變的;易變的;反復無常的
Something that is variable changes quite often, and there usually seems to be no fixed pattern to these changes.
例句
The potassium content of foodstuffs is very variable...食物中鉀的含量差別很大。There was a bit of a wind and it was blowing onshore, variable, but quite strong.有一陣風朝岸上吹來，風向變化不定，但風力很強。
N-COUNT
（質量、數量、規模等）可變因素
A variable is a factor that can change in quality, quantity, or size, which you have to take into account in a situation.
例句
Decisions could be made on the basis of price, delivery dates, after-sales service or any other variable...購買決定可能會基于價格、送貨日期、售后服務以及其他可變因素。Other variables in making forecasts for the industry include the weather and the general economic climate.對該產業進行預測時還要考慮天氣和宏觀經濟環境等其他不確定因素。
N-COUNT
變量;變項;變元
A variable is a quantity that can have any one of a set of values.
例句
It is conventional to place the independent variable on the right-hand side of an equation.普遍做法是把自變量放在等式的右邊。