孤立无援 be isolated and helpless; alone and helpless; be left alone and helpless; be left high and dry; fall to the ground; fail from lack of support; in a condition of utter helplessness; isolated and cut off from help; marooned; standing alone without help; thrown on one's own resources
To the children and parents and spouses and families and friends of the lost , we offer the deepest sympathy of the nation . and i assure you , you are not alone 我们向那些失去孩子、父母、配偶、家庭、朋友的人们致以美国最深切的慰问。我在这里向你们保证,你们绝不是孤立无助的。