使用 (shǐ yòng): to use, to employ

Please use this machine carefully.

I don't know how to use this software.

When using a mobile phone, pay attention to protecting your eyes.

This kind of material can be used repeatedly.

Please use the fire extinguisher correctly.

This software is very easy to use.

They used new technology to increase output.

Please read the instructions carefully before use.

Without permission, one may not use another person's account.