This thesis is devoted to the corpus-based study on Concessive Adverbial Clauses in Maritime Engineering English (MEE).

这篇论文旨在研究和分析让步状语从句在轮机英语（MEE）中的应用及其特点。

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Concessive adverbial clause is used to express certain unfavorable circumstances or opposite conditions, which however, do not prevent the action in the main clause from happening.

让步状语从句表示某种不利的情况或相反的条件，但这些因素并不能阻止主句动作的发生。

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