This scar is her main distinguishing mark.
这块疮疤是她主要的识别记号。
The distinguishing mark of graduate research is an original contribution to knowledge.
研究生研究的最显著的特征是它对知识的创新性的贡献。
It is composed of mutual corresponding index marks and distinguishing mark having been made into concealed one.
它由相互对应的索引标志和制成隐形标志的识别标志构成。
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