未知数

wèizhīshù

unknown quantity

HSK 7

漢字分解

Meaning and Usage

"未知数" literally means "unknown number," but it is commonly used metaphorically to describe something uncertain or unpredictable, such as results, situations, or attitudes.

Common Contexts

It often appears in contexts discussing outcomes that are not yet determined, like exam results, future developments, or personal intentions.

Collocations and Patterns

  • "未知数因素" (unknown factors): used when emphasizing unpredictable elements.
  • "未知数" (is an unknown): a common phrase to describe something or someone whose outcome or behavior is uncertain.

Usage Notes

When using "未知数," speakers imply that the situation or result cannot be predicted with current information. It is often used in formal or semi-formal contexts, such as news reports or discussions about plans and forecasts. Avoid confusing it with "确定" (uncertain), which is more general; "未知数" emphasizes the unknown as a variable or factor.

Summary

Use "未知数" to highlight unpredictability or unknown outcomes, especially in contexts involving numbers, results, or abstract factors.

例文

这次考试的成绩还是一个未知数。

Zhè cì kǎoshì de chéngjì hái shì yīgè wèizhīshù.

The results of this exam are still an unknown.

未来的经济发展充满了未知数。

Wèilái de jīngjì fāzhǎn chōngmǎnle wèizhīshù.

The future economic development is full of unknowns.

他的态度是个未知数,我们还需要观察。

Tā de tàidu shì gè wèizhīshù, wǒmen hái xūyào guānchá.

His attitude is an unknown; we still need to observe.