A rail automatic block signal system based on the field bus technology is introduced, and its reliability design is explained specially.

介绍一种基于现场总线技术的铁路自动闭塞系统，并就其可靠性设计作了重点阐述。

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He explained her car was specially built for her needs as well as the home.

先生解释说她的车和住所都是根据她的需要专门设计的。

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It should be specially explained that all these analysis is predicated on the assumption that all of the state's macroeconomic policies on the rural collective enterprises is the same.

需要特别说明的是，本文所有分析的前提是假设国家的宏观政策对所有的乡村集体企业的影响是一样的。

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Despite the uncertainties caused by Section 28, the legislation forbidding the promotion of homosexuality by local authorities, it should also be explained by teachers who were specially trained and willing to do so, they said.

BBC: Call for sex education update