仔细阅读软件合同，确保你明白了享有的许可权。
Read your software contracts, and make sure you understand your licensing rights.
但是，除合同另有约定外，未经该软件著作权人许可，不得向任何第三方提供修改后的软件。
The software so modified may not, however, be provided to the third party without the license of the software copyright owner, unless otherwise stipulated in the contract.
许可使用合同中软件著作权人未明确许可的权利，被许可人不得行使。
The licensee may not exercise the right that has not been licensed by the software copyright owner in the contract for licensing.
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