turning free

基本解释

Idle Roller: Free turning non-sprocketed rollers for guiding film through its appropriate path.
空轉輪：自由轉動的，非釦片的卷軸，用於引導膠片通過正確的路逕。
fanpaiwang.blog.sohu.com
The Standard tapped into an expanded reader segment and opened up new revenue sources after turning into a free newspaper.
《英文虎報》轉型爲免費報章，吸納新的讀者，同時亦開拓新收入來源。
B. Turning solar energy into free hot water, solar water heaters allow you to enjoy the pleasure anytime you want—a genuine one-time investment for life-time benefit.
太陽能熱水器主要利用天然的陽光能源，能採出免費的熱水，無論何時盡情享用，真正的一次性投資終身受益。
ilinyi.net

So what started as a fight between Darfuris and Arabs may be turning into a free-for-all, not least for profiteers.
ECONOMIST: Sudan
Over the past few months, there have been a string of online games turning to the free-to-play model to attract new players, and now a fairly big title is trying it on for size.
FORBES: Valve's Team Fortress 2 Goes Free to Play
As a result, Ubisoft is taking a cue from numerous iOS and Android developers, turning their attention to free-to-play games.
FORBES: Department of Justice Goes On Offensive Against Android Piracy