Work areas were not sharply demarcated but extremely fluid and changing.

工作范围并无明显区分,但流动性极大.

辞典例句

Smaller, more sharply demarcated ulcers are more likely to be benign.

小的有明显分界的溃疡很可能是良性的.

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The ulcer is shallow and sharply demarcated, with surrounding hyperemia.

溃疡表浅、边界清晰, 周围有充血.

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