利用职务上的便利，不是私自开拆、隐匿、毁弃邮件、电报罪的构成要件。

The action of utilizing the duty convenience isn't the constituent element of the crime of opening privately, hiding, ruining and throwing away mails and telegrams.

他担心这是他理论的根本缺陷并可能导致这整个优美的理念最终被毁弃。

He was afraid this was a fundamental blemish in his theory and that probably the whole beautiful idea would have to be given up.

第二百五十三条邮政工作人员私自开拆或者隐匿、毁弃邮件、电报的，处二年以下有期徒刑或者拘役。

Article 253 Any postal worker who opens, conceals or destroys mails or telegrams without authorization shall be sentenced to fixed-term imprisonment of not more than two years or criminal detention.

其始建年代应在殷墟文化第四期偏早阶段，毁弃时期应在殷墟文化第四期晚段，即武王灭商及其以后时期。

The buildings was first built in early phase of the fourth period of Yin Ruins culture and they were destroyed in late phase i. e. Emperor Zhou Wu conquered Shang dynasty.