8 sentences

1. 指南针是利用磁的原理制成的。

   zhǐ​nán​zhēn shì lì​yòng cí de yuán​lǐ zhì​chéng de.

   The compass was made using the principles of magnetism.

   Source: Dong Chinese Dictionary

2. 这台机器的工作原理非常简单。

   zhè tái jī​qì de gōng​zuò yuán​lǐ fēi​cháng jiǎn​dān.

   The working principle of this machine is very simple.

   Source: Dong Chinese Dictionary

3. 电磁感应是发电机工作的基本原理。

   diàn​cí gǎn​yìng shì fā​diàn​jī gōng​zuò de jī​běn yuán​lǐ.

   Electromagnetic induction is the basic principle behind how generators work.

   Source: Dong Chinese Dictionary

4. 能量守恒定律是物理学的基本原理。

   néng​liàng shǒu​héng dìng​lǜ shì wù​lǐ​xué de jī​běn yuán​lǐ.

   The law of conservation of energy is a fundamental principle of physics.

   Source: Dong Chinese Dictionary

5. 我们必须坚持马列主义的基本原理。

   wǒ​men bì​xū jiān​chí Mǎ Liè​zhǔ​yì de jī​běn yuán​lǐ.

   We must adhere to the basic principles of Marxism-Leninism.

   Source: Dong Chinese Dictionary

6. 他利用杠杆原理轻松地举起了那块巨石。

   tā lì​yòng gàng​gǎn yuán​lǐ qīng​sōng de jǔ​qǐ le nà kuài jù​shí.

   He used the principle of leverage to easily lift that huge rock.

   Source: Dong Chinese Dictionary

7. 只有通晓了其中的基本原理，才能解决更复杂的问题。

   zhǐ​yǒu tōng​xiǎo le qí​zhōng de jī​běn yuán​lǐ, cái néng jiě​jué gèng fù​zá de wèn​tí.

   Only by mastering the basic principles can one solve more complex problems.

   Source: Dong Chinese Dictionary

8. 我们可以利用动力学原理来分析这个物体的运动趋势。

   wǒ​men kě​yǐ lì​yòng dòng​lì​xué yuán​lǐ lái fēn​xī zhè​ge wù​tǐ de yùn​dòng qū​shì.

   We can use the principles of dynamics to analyze the motion trends of this object.

   Source: Dong Chinese Dictionary