As I have said, women are not just a vulnerable group and not just a free source of care.
我已经说过，妇女不只是一个脆弱群体，也不只是一个提供无偿关爱的群体。
We are your commercial-free source of current events for middle and high school classrooms.
这里是为中高中生准备的免费的时事新闻。
Remember the drinking fountain, that once ubiquitous, and free, source of H2O?
还记得喷泉饮水机吗？
Gravity and body mass are a 'free' source of power, which can minimize reliance on muscular force.
重力和身体的质量都是免费的能源，能减少我们对肌肉力量的依靠。
Gravity and body mass are a 'free' source of power, which can minimize reliance on muscular force.
重力和身体的质量都是免费的能源，能减少我们对肌肉力量的依靠。
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