The phrase "able to maintain this" is correct and usable in written English.
It can be used when discussing the capacity or capability to continue a certain state, condition, or action.
Example: "The team is confident that they are able to maintain this level of performance throughout the season."
Alternatives: "capable of sustaining this" or "able to uphold this".
Only robust, accessible and adequately funded services will be able to maintain this level of care.
And will either Call of Duty or GTA be able to maintain this momentum going forward?
By bringing the history and culture of the company, they have been able to maintain this.
Intel is confident that it will be able to maintain this pace of improvement in silicon for another 15 years.
Rubens was able to maintain this tremendous output owing to his large studio of assistants, apprentices, collaborators, and engravers.
"If the outside world ceases and desists from providing military assistance to Savimbi, he will not be able to maintain this war," Mr. Fowler said.
Landless peasant farmers or war veterans were supposed to be settled on the farmland, but property was often claimed by politically connected individuals without adequate farming experience who were not able to maintain productivity; this, along with drought conditions, greatly contributed to the decline of the agricultural sector and the country's general economy in the 2000s.
Since it's been a while since stocks have been able to maintain momentum, this could be a buying opportunity, but keep in mind that many stocks face price-to-earnings valuation concerns down the road.
Alone again, then, in the E flat major quartet, the four Orion players sounded sassier and peppier, and they were able to maintain some of this flair in the final quintet, in G minor, which bears striking resemblances to the famous symphony in the same key.
Mr Hu and Mr Wen were also able to maintain growth over this period in ways which were indisputable and visible.
Although the average percentage of days covered by medicine dispensed was high, fewer health facilities were able to maintain patients at this target level over the 6, or 12 month study periods.
