# Deduce 與 Induce的差異和聯系詳解

June 02, 2021

## ## 何時使用 Deduce

Deduce的發音/dɪˈduːs/

Deduce 是什麼意思？ Deduce 是動詞。意思是通過邏輯和推理得出結論。其對應的名詞是演繹。

* From the cigarette butt still burning in the ashtray and the lukewarm coffee in the pot, the detective deduced that the suspect had only recently left his apartment.
* Philosophers use formal logic to deduce profound truths about the nature of knowledge, truth, and even of existence itself.
* He helped deduce that 12 of the Federalist papers were written by James Madison instead of Alexander Hamilton. –The Chicago Sun-Times

## ## 何時使用 Induce

Induce的發音/ɪnˈduːs/

Induce 是什麼意思？ Induce 也是動詞。它的意思是導致或影響某事或推斷。即：劝说; 诱使;

* The doctor was out of the proper medicine, so she induced vomiting by inserting her fingers down the patient’s throat.

1， All cats shed.  （貓掉毛）
2， Rufus is a cat.  （Rufus是一只貓）
3， Therefore, Rufus sheds.  （所以Rufus掉毛）

1，We found thirty American pennies, and they were all made of copper.   我們找到了三十個美國便士，它們都是銅做的。
2，We found no American pennies that were not made from copper.   我們沒有發現非銅製成的美國便士。
3，Therefore, all American pennies must be made from copper.  因此，所有美國便士必須由銅製成。

## ##記住差異的技巧

Induce 和 Deduce 分別描述演繹推理和歸納推理。

Induce vs. Deduce ：由於deduction （演繹）將廣泛的、分類的觀察提煉為具體、具體的結論，並且deduction （演繹）和distill （提煉）每個都以字母 D 開頭，因此應該很容易記住這個動詞的含義。