These constraints might be in terms of time, money, technology, decisions, compatibility, regulatory, people, process or all of the above.

这些约束可能是时间上的，也可能是资金、技术、决策、兼容性、管理、人员、过程或者以上所有方面的。

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Mixed mode exists to maintain backward compatibility. However, mixed mode limits the system to the constraints that are imposed by earlier software releases.

混合模式的存在是为了保留回溯相容性，但混合模式限制了系统对旧版软体约束的使用。

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Chief security officer who believes that the biggest obstacle to improve the security environment is the lack of budget constraints, system compatibility issues, and trained personnel.

首席安全官们认为，改进安全环境面临的最大障碍是：预算限制、系统兼容性问题、和经过培训的人才缺乏。

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