WHO encourages the use of its information materials for information purposes i.e. when the purpose of the use is to share objective information, whether free of charge or for sale.
世界卫生组织鼓励为信息目的使用其信息材料，即无论是免费或为了销售，使用的目的在于分享客观信息。
2
The agreement, which is signed by the publisher, applies whether the translation will be distributed free of charge or for sale.
由出版商签署的协议适用于译文是否免费分发或用于出售。
3
Software companies and programmers can charge anything they like for their programs-apple keeps 30 percent of each sale-but I expect many or most of the apps will be free.