The genetic source and origin of pregnanes and 4-methyl steranes are discussed herein.

本文讨论了孕甾烷和4-甲基甾烷的生源和成因问题。

youdao

Objects for schema V8R2M5, and containing data, are copied to schema V9R0M0 into the source tablespace retaining the origin object owner.

模式V 8r2m 5中的对象和包含的数据被复制到源表空间中的模式V 9r0m 0中，原来的对象所有者保持不变。

youdao

Once ivory has left its country of origin, and if it is seized by customs officials, it can be hard to identify its source and those responsible for acquiring it.

一旦象牙离开其原产国，并且如果象牙被海关官员抓获，那么就很难识别出其产地以及找出那些对此有需求的人。

youdao

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

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