文章第四部分，涉及了与合同订立紧密相关的电子合同形式、电子签名和电子认证制度等诸多内容。

Part IV deals with those contents closely related with conclusion of contract, such as the forms of electronic contract, electronic signature and electronic authentication etc.

youdao

她们不同的个性气质、不同形式的悲剧历程中却蕴涵有相同的美学意义，即对旧制度、旧生活和旧我的反叛，追求精神生命的永恒。

The difference in the character and the tragedy contains the same esthetics meaning, namely, the fight against obsolete system, life and even themselves and the pursuit of spiritual immortality.

youdao