7 sentences

1. 他陷入了苦苦的冥思之中。

   tā xiàn​rù le kǔ​kǔ de míng sī zhī​zhōng.

   He fell into deep contemplation.

   Source: Dong Chinese Dictionary

2. 他沉溺于烟花之地，不思进取。

   tā chén​nì yú yān​huā zhī dì, bù sī jìn​qǔ.

   He indulged himself in brothels and had no ambition to improve himself.

   Source: Dong Chinese Dictionary

3. 既然事关重大，你应该三思而后行。

   jì​rán shì​guān​zhòng​dà, nǐ yīng​gāi sān sī ér​hòu xíng.

   Since it is a matter of great importance, you should think twice before acting.

   Source: Dong Chinese Dictionary

4. 我们不能总是循守故事，而不思进取。

   wǒ​men bù néng zǒng​shì xún shǒu gù​shì, ér bù sī jìn​qǔ.

   We shouldn't always stick to old routines and stop striving for progress.

   Source: Dong Chinese Dictionary

5. 他如果不思进取，很容易在诱惑面前堕落。

   tā rú​guǒ bù sī jìn​qǔ, hěn róng​yì zài yòu​huò miàn​qián duò​luò.

   If he doesn't strive for progress, he could easily fall into depravity when faced with temptation.

   Source: Dong Chinese Dictionary

6. 他一受到表扬就有些飘飘然，变得不思进取了。

   tā yī shòu​dào biǎo​yáng jiù yǒu​xiē piāo​piāo​rán, biàn de bù sī jìn​qǔ le.

   He got a bit carried away after being praised and became complacent.

   Source: Dong Chinese Dictionary

7. 神之格思，不可度思。

   Shén zhī gé sī, bù kě duó sī.

   The presence of the gods is subtle and unfathomable.

   Source: Dong Chinese Dictionary