9 sentences

1. 电磁波在真空中传播。

   diàn​cí​bō zài zhēn​kōng zhōng chuán​bō.

   Electromagnetic waves propagate in a vacuum.

   Source: Dong Chinese Dictionary

2. 这是真空密封的。

   zhè shì zhēn​kōng mì​fēng de.

   This is vacuum-sealed.

   Source: OpenSubtitles

3. 权力真空是个容易消失的地方。

   quán​lì zhēn​kōng shì gè róng​yì xiāo​shī de dì​fang.

   A power vacuum is an easy place to disappear.

   Source: OpenSubtitles

4. 光在真空中的传播速率是恒定的。

   guāng zài zhēn​kōng zhōng de chuán​bō sù​lǜ shì héng​dìng de.

   The speed of light in a vacuum is constant.

   Source: Dong Chinese Dictionary

5. 在真空中，无线电波也是以光速传播的。

   zài zhēn​kōng zhōng, wú​xiàn​diàn​bō yě shì yǐ guāng​sù chuán​bō de.

   In a vacuum, radio waves also travel at the speed of light.

   Source: Dong Chinese Dictionary

6. 真空不能传声，因为声音的传播需要介质。

   zhēn​kōng bù néng chuán shēng, yīn​wèi shēng​yīn de chuán​bō xū​yào jiè​zhì.

   Sound cannot travel through a vacuum because its transmission requires a medium.

   Source: Dong Chinese Dictionary

7. 科学家在实验室里创造了一个完美的真空环境。

   kē​xué​jiā zài shí​yàn​shì lǐ chuàng​zào le yī gè wán​měi de zhēn​kōng huán​jìng.

   Scientists created a perfect vacuum environment in the laboratory.

   Source: Dong Chinese Dictionary

8. 物理学家正在研究这些微观粒子在真空中的运动。

   wù​lǐ​xué​jiā zhèng​zài yán​jiū zhè​xiē wēi​guān lì​zi zài zhēn​kōng zhōng de yùn​dòng.

   Physicists are studying the movement of these microscopic particles in a vacuum.

   Source: Dong Chinese Dictionary

9. 为了追求清凉的感觉，有些人在夏天会尝试真空打扮。

   wèi​le zhuī​qiú qīng​liáng de gǎn​jué, yǒu​xiē rén zài xià​tiān huì cháng​shì zhēn​kōng dǎ​ban.

   To keep cool, some people try going braless in the summer.

   Source: Dong Chinese Dictionary