3 sentences

1. 严格来说，他们没有成功。

   yán​gé​lái​shuō, tā​men méi​yǒu chéng​gōng.

   Strictly speaking they did not succeed.

   Source: CCMatrix

2. 严格来说，地球不是圆的。

   yán​gé​lái​shuō, dì​qiú bù​shì yuán de.

   Strictly speaking, the earth is not round.

   Source: Tatoeba

3. 严格来说，相貌不过是一种面具。

   yán​gé​lái​shuō, xiàng​mào bù​guò​shì yī​zhǒng miàn​jù.

   Strictly speaking, appearance is nothing but a mask.

   Source: CCMatrix