这通常意味着它有一个自由开源的版本(甚至带有一份OSI认可的许可证书)，但自由付费才能使用并且拥有更多特性的版本才是该厂商的主要产品。

This often means there's a free, open source (sometimes even with an OSI-approved license) version of a product available, but paid versions with proprietary features are a vendor's primary product.

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GPL允许每个人发表修改过的产品，但仅限于在同一个许可证书下。

The GPL permits everyone to publish modified works, but only under the same license.

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公司具有自主进出口经营权和进出口卫生许可证书，产品远销日本、韩国、南非等国家。

The group has the independent right of export and import, and also owns the export and import hygiene permission license. The product sales to Japan, Korea and South Africa.

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