商标禁用条款的中英文表达如下：

一. 中文表达：

商标禁用条款通常是指在商标许可合同中，对商标被许可人使用商标的具体方式、范围以及禁止使用的情形进行明确约定的条款。该条款旨在保护商标权人的合法权益，确保商标被正确使用，并防止商标被滥用或损害商标权人的声誉。

二. 英文表达：

The trademark prohibition clause refers to the clause in a trademark license contract that clearly stipulates the specific ways and scope of trademark use by the licensee, as well as the prohibited uses. This clause aims to protect the legitimate rights and interests of the trademark owner, ensure the proper use of the trademark, and prevent abuse or damage to the reputation of the trademark owner.

• 例如：In the trademark license agreement, the trademark prohibition clause specifies that the licensee is not allowed to use the trademark on products or services that are not approved by the trademark owner, or to modify the trademark in any way without permission. （在商标许可协议中，商标禁用条款明确规定被许可人不得在未经商标权人批准的产品或服务上使用商标，也不得未经许可以任何方式修改商标。）

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