The legal nature of the contractual relationship makes it imperative that the project management term is acutely aware of the legal implications of actions taken when administering any contract.
法律性质的当务之急契约关系，项目管理术语是感同身受的法律含意当管理措施的任何合同。
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Fourthly, moral hazard is invisible. It hides in people's mind that is hard to notice beforehand and to investigate afterwards. So it is imperative to exercise legal regulations on it .