maintain
US /meɪnˈteɪn/
UK /meɪnˈteɪn/

1.
manter, fazer a manutenção de
to keep something in good condition by checking or repairing it regularly
:
•
It's important to regularly maintain your car.
É importante manter seu carro regularmente.
•
The building has been well maintained over the years.
O edifício foi bem mantido ao longo dos anos.
2.
manter, sustentar
to cause something to continue; to keep something at the same level or standard
:
•
She struggled to maintain a healthy weight.
Ela lutou para manter um peso saudável.
•
The company managed to maintain its market share.
A empresa conseguiu manter sua participação de mercado.