ADV

effectively, efficiently, reliably
continuously
The machine can operate for 15 hours continuously at full power
electrically, electronically, hydraulically, manually, remotely (= by remote control)
The doors can be manually operated in the event of fire

VERB + OPERATE

be designed to
systems designed to operate at the highest speeds
be easy to
The machinery is easy to operate

PHRASES

battery operated

ADV

effectively, efficiently, profitably, successfully
autonomously, independently
commercially
The laboratory is still owned by the government but is now commercially operated

VERB + OPERATE

be able to
be allowed to
continue to

PREP

according to
The government does not operate according to fixed rules
as
We operate as an advisory service for schools
within
Local authorities operate within a wider political system