Not structurally sound; weak, decayed, or unsafe.

结构不牢固；脆弱、腐朽或不安全的。

Not healthy in body or mind; diseased or impaired.

身心不健康；患病或受损的。

Based on faulty reasoning; logically invalid or unreliable.

基于错误推理；逻辑上站不住脚或不可靠的。

Not financially secure or prudent; risky or unstable.

财务不稳健或不谨慎；有风险或不稳定的。