uneven

Compared meaning: a number not divisible by two (adjective).

比较义项：奇数的（形容词）。

• odd

  The standard, everyday word for a number not divisible by two; used constantly in math class, textbooks, and casual speech, as in "odd or even".

  表示“不能被二整除的数”最常用、最标准的说法，在数学课、教材和日常口语中都极为常见，如“odd or even”（奇数还是偶数）。

  Ask the children to circle every odd number on the worksheet.

  请孩子们把练习纸上每一个奇数都圈出来。

• uneven 本词

  A rare, old-fashioned synonym for "odd" in this numeric sense; most modern speakers instead read "uneven" as "not smooth" or "not equal," so using it for numbers can confuse listeners.

  在“奇数”这个意义上是一个罕见、略显过时的同义词；大多数现代说话者会把uneven理解成“不平坦的”或“不均等的”，所以用它指数字容易让听者困惑。

  The old arithmetic book still referred to three and five as "uneven numbers."

  那本旧算术课本仍把三和五称为“uneven numbers”（奇数）。

Odd and uneven can both mean a number not divisible by two. Odd is the normal, everyday word for this in modern English. Uneven is a rare, old-fashioned word for it and can confuse people. Not compared: uneven's common meaning, not smooth or not equal.

这两个词在数学语境中都可以指“奇数的”，但地位很不对等：odd是现代英语里表示“奇数”的标准说法；uneven表示“奇数”十分少见、偏旧式，容易与它更常见的“不平坦的、不均匀的”意思混淆——那个意思这里不作比较。