Indeterminacy is the state of not being fixed, and of not being knowable for sure. It is the noun that sits behind indeterminate.

Indeterminacyindeterminacy is the state指的是那種狀態 of not being fixed事情還沒定下來，and of not being knowable for sure而且也還無法確定知道。It is the noun that sits behind indeterminate它是indeterminate這個形容詞背後的名詞。

Philosophers use it when a sentence can be read more than one way (the indeterminacy of meaning). Scientists use it when a system has no single settled value.

Philosophers use it哲學家會用這個字 when a sentence can be read more than one way當一個句子可以有不只一種讀法的時候 (the indeterminacy of meaning)（也就是意義上的indeterminacy）。Scientists use it科學家會用這個字 when a system has no single settled value當一個系統沒有單一固定的數值的時候。

In ordinary English the word is uncommon; people say “uncertainty” instead. Though actually, those two are not perfect twins.

In ordinary English在一般英文裡，the word is uncommon這個字不太常見；people say 'uncertainty' instead人們比較常改說uncertainty（不確定）。Though actually不過實際上，those two are not perfect twins這兩個字並不是完全一樣的雙胞胎。

Uncertainty often lives in the person — you feel unsure. Indeterminacy lives in the thing: there is no single definite answer out there to find. A weather forecast can leave you uncertain; a rule that does not say yes or no has indeterminacy built in.

Uncertainty often lives in the personuncertainty常常存在於「人」身上——you feel unsure是你自己覺得不確定。Indeterminacy lives in the thingindeterminacy則存在於「那件事」本身：there is no single definite answer out there to find外面根本就沒有單一、確定的答案可以找到。A weather forecast can leave you uncertain天氣預報可以讓你感到不確定；a rule that does not say yes or no而一條沒有明確說是或不是的規定 has indeterminacy built in本身就帶有indeterminacy。

Formal, mainly academic.

Formal正式，mainly academic主要用在學術場合。