This collateral contract can be proved by evidence extrinsic to the main written contract.

后一个并行合同可以通过与主书面合同有关的外在证据得以证实。

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This article touches upon the cultural status quo from the aspects of "problem and representation, cause and collateral evidence, essence and conclusion".

本文从问题与表现、原因与旁证、实质与结论等方面粗略地考察了时代文化的现状，宏观分析了造成这些现象的原因。

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