实验开始前,研究员必须校准所有仪器。Shíyàn kāishǐ qián, yánjiūyuán bìxū jiàozhǔn suǒyǒu yíqì.Before the experiment begins, researchers must calibrate all the instruments.
医院里的各种仪器都需要定期检查。Yīyuàn lǐ de gè zhǒng yíqì dōu xūyào dìngqī jiǎnchá.All kinds of instruments in the hospital need regular checks.
这台仪器很贵,用的时候千万要小心。Zhè tái yíqì hěn guì, yòng de shíhou qiānwàn yào xiǎoxīn.This instrument is very expensive, so be extremely careful when using it.