停电时，医院依靠备用发电机维持电力供应。

During the blackout, the hospital relied on the backup ___generator to maintain power.

这台氧气发生器可以为医院提供纯净的氧气。

This oxygen ___generator can supply pure oxygen for the hospital.

这个在线工具可以自动生成随机密码。

This online ___generator can automatically create random passwords.