maintain

проводити технічне обслуговування (поточний ремонт); обслуговувати; витримувати; ремонтувати; забезпечувати; зберігати; підтримувати (напр. режим польоту)

maintain the momentum (of the advance)

maintain the order

maintain lines

maintain defense

maintain а command

maintain security

maintain obstacles

maintain close contact with the situation

maintain control

maintain direction

maintain a command

maintain a connection

maintain a hold

maintain a patrol

maintain a position

maintain contact

maintain normal fires

maintain order

maintain resistance

maintain roads

maintain mastery in the air

maintain a bridgehead

maintain a secure environment

maintain readiness

Hold means maintain the last good value received