un·sound
adjective/ˌʌnˈsaʊnd/
/ˌʌnˈsaʊnd/
Idioms - (of a building, etc.) in poor condition; weak and likely to fall down
破旧的；摇摇欲坠的 - The roof is structurally unsound.
这屋顶结构不牢固。
- The roof is structurally unsound.
- not acceptable; not based on reliable evidence
不稳妥的；不可接受的；无可靠根据的 - ideologically unsound
意识上不妥 - The use of disposable products is considered ecologically unsound.
使用一次性产品被认为是没有顾及对生态的影响。 - This line of argument is unsound.
这种论证方法没根没据。
- ideologically unsound
- containing mistakes; that you cannot rely on
有错误的；靠不住的 - The methods used were unsound.
所使用的方法不可靠。
opposite sound - The methods used were unsound.
Idioms
of unsound mind
- (law) not responsible for your actions because of a mental illness
精神失常，神志不清（无须对自己的行为负责）