1. sustain
Only two of the planets could sustain life.
A cup of coffee isn’t enough to sustain you until lunchtime.
The company sustained damages in excess of its insurance coverage.
sustainable sources
to make something continue to exist or happen for a period of time. He was incapable of sustaining close relationships with women.
The monument has sustained certain damage.
The soil in this part of the world is not rich enough to sustain a large population.
The team may not be able to sustain this level of performance. The money he received was hardly enough to sustain a wife and five children.
‘this thought had sustained him throughout the years’
If you want to speak fluently you must constantly sustain the contact with language.
while two sustained less serious wound
"A resident sustained bruising to his arms following restraint."
A starting population of 150 to 180 would best sustain itself at the same rate over six to eight generations.
Sustain means to support something or keep it going. If you get hungry in the mid-afternoon, you might try snacking to sustain your energy through dinner.
Time and space are one body, mind and things sustain each other.
2. maintain
maintain relationhip
The prince says that the world will be saved by beauty! And I maintain that the reason he has such playful ideas is that he is in love.
To burn always with this hard, gem-like flame, to maintain this ecstasy, is success in life.
And at times when I became discouraged with trying to reconcile working and bringing up children, it was my husband who helped to maintain my determination.
And with all their charms they are not of a kind to maintain their influence over us for any length of time, when we know that they are nonentities.
Fathers and teachers, I ponder, "What is hell?" I maintain that it is the suffering of being unable to love.
It is important to maintain backward compatibility with software that was written to run on the former system.
All persons shall have full and free liberty of religious opinion; nor shall any be compelled to frequent or maintain any religious institution.
All social animals use some methods of communication to exchange information and to maintain an orderly community.
The precious results of democracy are the apple of the people's eye and the people will fight to maintain these ideals.
Although it does require effort and resources to maintain a neighborhood, the investment is quickly repaid.
Critics maintain that these reforms will lead to a decline in educational standards.
She's maintaining three kids. (Ona ma na utrzymaniu trójkę dzieci
Definition to maintain a piece of machinery means to keep it in good working order by checking it regularly and mending it as soon as anything goes wrong with it
in a handwritten system, accounts are maintained either in a bound book or a series of separate sheets of paper or card, each account occupying a separate page.