as closely linked as flesh and blood ? 我們兩國唇齒相依，～，要團結起來，共御外侮。Our two countries are close as lips and teeth and linked as flesh and blood. We must unite as one to resist foreign aggression.
骨肉相連
as closeiy linked as flesh and blood
骨肉相連ɡǔ ròu xiānɡ lián
象骨頭和肉一樣連在一起。比喻關系非常親密。as closely linked as flesh and blood