A fuzzy variable becomes a linguistic variable when we modify it with descriptive words, such as somewhat fast, very high, real slow, positive big, negative small etc.

模糊变量成为一个语言变量时，我们用文字描述修改，如有点快，非常高，慢慢的、正面的大，消极的小等。

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The timing of any recovery for the PGMs is somewhat up in the air since it depends on factors such as how fast auto output rebounds from the Japanese quake and future economic data.

FORBES: PGM Weakness Seen As Temporary; Supply Issues, Auto Recovery Should Support Prices