adj.靠不住的，不稳妥的，观点不正确的，有错误的，破旧的，摇摇欲坠的

The argument was unsound, based on a false premise.
这个论点是站不住脚的，因为它基于一个错误的前提。
The bridge was declared unsafe due to unsound construction.
由于建造不牢固，这座桥被宣布不安全。
His reasoning was unsound, leading to an incorrect conclusion.
他的推理有误，导致了错误的结论。
The foundation of the old house was found to be unsound, requiring major repairs.
老房子的地基发现有问题，需要大修。
The company's financial strategy proved to be unsound, resulting in bankruptcy.
公司的财务策略被证明是不稳健的，导致了破产。
The candidate's policy proposals were criticized as unsound and unrealistic.
候选人的政策提议被批评为不切实际且不合理。
The unsound management practices led to a decline in employee morale.
不良的管理实践导致员工士气下降。
The theory, though intriguing, was ultimately deemed unsound by the scientific community.
尽管这个理论很吸引人，但最终科学界认为它是不成立的。
The roof had become unsound after years of neglect, necessitating immediate attention.
多年失修后，屋顶变得不稳固，需要立即处理。
The investment scheme was unsound, with high risks and little potential for return.
这项投资计划是不稳健的，风险高而回报潜力小。