中国已经建造两艘元级，第二艘在第一艘基础上进行改进。
The Chinese have already built two Yuans, the second one an improvement on the first.
随后可以按优先级、完成日期和其他任务元数据对这些任务进行排序。
These tasks could then be sorted by priority, due date, and other task metadata.
这些结构中也包含更多的类二级结构元。
These structures also possess much more secondary structure like elements.
这些结构中也包含更多的类二级结构元。
These structures also possess much more secondary structure like elements.
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