These calls have no known source of origin, no numbers and cannot be traced.

这些调用没有已知的源头，没有数字和不能被追踪。

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Other types of biogas are called digester gas, marsh gas or even swamp gas, depending on the source of origin.

其他类型的沼气被称为沼气池气，沼气等，甚至沼泽气体，这取决于该产地来源。

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The article has 3 parts. The first part is a study about source of origin, composition , decoct method and regimen of Lonicerae and Forsythiae Powder.

本文分为3个部分，第一部分是关于银翘散出处、组成、煎服法研究。

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Instead, trademark law protects brand names, logos, symbols, designs and other optional elements of apparel and accessories, and trade dress law protects the design, packaging or appearance of apparel and accessories, solely to the extent they identify the source and origin of such products.

FORBES: Protecting Fashion Designs

To be clear, elements that do not identify source and origin of apparel and accessories do not qualify for protection under the US Trademark Act.

FORBES: Protecting Fashion Designs

As Apple is using the reply-to address of a message's User Data Header to identify the origin rather than the raw source, receiving iPhone owners risk being fooled by a phishing attack (or just a dishonest acquaintance) that poses as a contact or a company.

ENGADGET: iPhone reportedly vulnerable to text message spoofing flaw