在一些期权合同里，当履行合同时有可能被移交。
In some option contracts, it is subject to delivery when the contract is exercised.
基础的作为另一事物基础的东西。在一些期权合同里，当履行合同时有可能被移交。
Underlying Something that forms the foundation for another thing. In some option contracts, it is subject to delivery when the contract is exercised.
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