The effort to construct these monuments and move them around the island must have been considerable-but no one knows exactly why the Rapa Nui people undertook such a task.
必定需要相当大的努力才能建成这些遗迹并在岛上将它们四处移动。但是没有人知道到底拉帕努伊人为何要承担这样的任务。
In China, however, there are only a several hospitals that have performed such operation and even no effort dedicated to the study and development of the corresponding therapy plan system.
国内只有少数医院开展了这一项工作，而与其配套的治疗计划系统的研制更是空白。
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