The phrase "a source of play" is correct and usable in written English.
It can be used to describe something that provides opportunities or materials for play, often in a context related to children or recreational activities.
Example: "The new playground is a source of play for the children in the neighborhood, encouraging creativity and social interaction."
Alternatives: "a means of play" or "a provider of play".
McGowan said they're also keen observers and judges of individuals, seeing them as a "danger or a potential boon," and perhaps a source of play, even humor.
"Science fiction starts to get a bad reputation when it stops being a source of play and starts to take itself seriously as a force in the real world," says Ings. "If you don't take it seriously then it can be useful, because you're freeing up your imagination and churning through ideas of what the future might be like.
As a vehicle for physical mobility and a source of play for young people during an era of intense federal attention to juvenile delinquency, the bicycle became a fulcrum for efforts to maintain segregated public spaces in the District.
The playhouse, founded in 1931 by Lawrence Langer, a Theater Guild member, and his wife, Armina Marshall, was originally meant to be a source of plays and musicals for Broadway.
He's not even ruling out future ventures in Africa, which doesn't yet have the infrastructure to support major franchises but is already a source of playing talent.
The visitors combined that with the ability to break forward down either flank and Yohan Cabaye was also a source of creativity, playing alongside Danny Guthrie in the centre of Newcastle's midfield.
In addition to providing a source of timber, they play a crucial role in sequestering carbon.
Taken together, these data suggest that hASCs are a source of CAFs which play an important role in the tumor invasion.
As mentioned above, gene expression studies have revealed that VSELs express several epiblast and germ line markers and we hypothesize that VSELs originate from early epiblast-derived migrating primordial germ cell (PGC -like cells, are dePGC -likeuring development in adult tissues as a sourcells TCSCs, are play a role in organ rejuvenation [ 76, 77].
