1 . Insecure
作者:orchid859410:不牢靠(Insecure)D:對自己完全沒有自信,在社交中經常會緊張和失望,如果一切進行得不順利。.
2 . unsound
the roof of the building is unsound ., 這幢樓房的屋頂不牢靠.
3 . Insecurity
Insecure 不穩定的, Insecurity 不牢靠, Insecurely 不安全地
4 . not strong enough
If the foundations are not strong enough , the castle could collapse ., 如果地基不牢靠, 就有可能導致城堡倒塌.