7 sentences

1. 圆规是数学课必备的工具。

   yuán guī shì shù​xué kè bì​bèi de gōng​jù.

   A pair of compasses is an essential tool for math class.

   Source: Dong Chinese Dictionary

2. 字典是学习语言必备的工具。

   zì diǎn shì xué​xí yǔ​yán bì​bèi de gōng​jù.

   A dictionary is an essential tool for language learning.

   Source: Dong Chinese Dictionary

3. 手机是现代生活的必备工具。

   shǒu​jī shì xiàn​dài shēng​huó de bì​bèi gōng​jù.

   The mobile phone is an essential tool for modern life.

   Source: Dong Chinese Dictionary

4. 他打算在周末买一些必备的居家用品。

   tā dǎ​suàn zài zhōu​mò mǎi yī​xiē bì​bèi de jū​jiā yòng​pǐn.

   He plans to buy some household essentials over the weekend.

   Source: Dong Chinese Dictionary

5. 高度的自律是每个优秀运动员必备的品质。

   gāo​dù de zì​lǜ shì měi gè yōu​xiù yùn​dòng​yuán bì​bèi de pǐn​zhì.

   A high degree of self-discipline is an essential quality for every elite athlete.

   Source: Dong Chinese Dictionary

6. 勇于攀登科学高峰是科研人员必备的品质。

   yǒng​yú pān​dēng kē​xué gāo​fēng shì kē​yán rén​yuán bì​bèi de pǐn​zhì.

   The courage to scale scientific heights is an essential quality for researchers.

   Source: Dong Chinese Dictionary

7. 在冷兵器时代，武术是士兵必备的基本技能。

   zài lěng​bīng​qì shí​dài, wǔ​shù shì shì​bīng bì​bèi de jī​běn jì​néng.

   In the age of cold weapons, martial arts were an essential skill for soldiers.

   Source: Dong Chinese Dictionary