虽然它最初颇受争议——因为它是在一片支持和反对声中提出的——但UML以后却成为系统标记法的行业标准。
Though it was controversial upon inception — it was introduced amidst a flurry of protest and counterproposals — UML has since become the industry standard for system notation.
基线的工作区会如此标记，并且成为只读的，所以它不能再被编辑了。
The baselined Workspace is flagged as such and becomes read-only, so it can no longer be modified.
这些刻于60,000年前鸵鸟蛋壳上的字迹，能否成为人类使用版画交流的最早标记呢？
COULD these lines etched into 60,000-year-old ostrich eggshells (see photo) be the earliest signs of humans using graphic art to communicate?
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