在过去的10年中，只有一小群经过忠诚调查的科学家才能见到某些图像，但是不能公开使用它们。
Over the last 10 years, a tiny group of scientists with security clearance was able to see some of the images, but couldn't use them publicly.
XMethods网站是一个有用的Web服务工具(请参阅参考资料)，在那里可以找到在各种服务器平台上实现的可公开使用的Web服务的列表。
A useful facility for Web services is the XMethods Web site (see Resources), where you can find a list of publicly available Web services implemented on a wide range of server platforms.
选择意味着迷茫，而没有选择则是丧失自由。故而，自由的前提是一个理性的头脑和一个允许理性公开使用的外在环境。
Choice eis puzzlement; without choice, freedom is lost. Thus, a rational mind and a circumstance allowing rationality be exercised publicly, are the prerequisite of freedom.
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