On a graph, the line that runs from left to right, along the bottom, with numbers or dates or names marked along it.

在圖表上On a graph，那條從左到右延伸的線the line that runs from left to right，沿著底部along the bottom，上面標著數字、日期或名稱with numbers or dates or names marked along it。

Say it "EX-axis." It is one half of a pair: the x-axis goes across, the y-axis goes up.

唸作"EX-axis"Say it "EX-axis."。它是It is 一對裡的一半one half of a pair：x軸是橫著走的the x-axis goes across，y軸是往上走的the y-axis goes up。

Whatever you are measuring against — time, age, month, temperature — usually sits on the x-axis, and the thing that changes because of it sits on the y-axis. So on a chart of a company's sales, the months run along the x-axis and the money climbs the y-axis.

不管你是拿什麼當比較基準Whatever you are measuring against——像時間、年齡、月份、溫度time, age, month, temperature——通常usually 放在x軸上sits on the x-axis，而and 因它而變化的東西the thing that changes because of it 放在y軸上sits on the y-axis。所以So 在一家公司銷售額的圖表上on a chart of a company's sales，月份沿著x軸排列the months run along the x-axis 而and 金額沿著y軸往上爬the money climbs the y-axis。

A useful memory trick many teachers here use: the x is a cross, and you go across. The plural is x-axes, said "EX-ax-eez," which sounds nothing like the singular and surprises people.

一個好用的記憶技巧A useful memory trick 很多老師這裡都用many teachers here use：x這個字母the x 是個叉叉is a cross，而and 你就是「橫著走」you go across。複數The plural 是is x-axes，唸作said "EX-ax-eez,"，這which 聽起來完全不像單數sounds nothing like the singular 而and 常讓人意外surprises people。

You will meet the word all through school mathematics and science, and also in ordinary work life whenever somebody is explaining a chart in a meeting or a report. It is written with a small x and a hyphen; some books write it as the x axis with a space, and both are fine.

你會遇到這個詞You will meet the word 貫穿整個學校數學和科學課程all through school mathematics and science，而且also 也會出現在一般職場生活裡in ordinary work life 只要有人在會議或報告裡解釋圖表whenever somebody is explaining a chart in a meeting or a report。它寫成It is written 小寫x加連字號with a small x and a hyphen；有些書some books 寫成中間有空格的x axiswrite it as the x axis with a space，而and 兩種都可以both are fine。