4 sentences

1. 气球和仪器消失了。

   qì​qiú hé yí​qì xiāo​shī le.

   The balloon and instruments disappeared.

   Source: CCMatrix

2. 稳定飞船所需要的一个关键仪器已经停止正常工作。

   wěn​dìng fēi​chuán suǒ xū​yào de yī​ge guān​jiàn yí​qì yǐ​jing tíng​zhǐ zhèng​cháng gōng​zuò.

   A critical instrument needed to stabilize the spacecraft has stopped working properly.

   Source: CCMatrix

3. 想象一下，你正坐在一架飞机的驾驶舱内，周围是仪器和操纵装置。

   xiǎng​xiàng yī​xià, nǐ zhèng zuò zài yī jià fēi​jī de jià​shǐ​cāng nèi, zhōu​wéi shì yí​qì hé cāo​zòng zhuāng​zhì.

   Imagine that you are sitting in the cockpit of an airplane, surrounded by instruments and controls.

   Source: CCMatrix

4. 科学仪器成了地位的象征。

   kē​xué​yí​qì chéng le dì​wèi de xiàng​zhēng.

   Scientific instruments became status symbols.

   Source: CCMatrix