Obama's narrow defeat at the hands of the senator( he just a few days earlier had clobbered in Iowa )deprived the challenger of the clear and undisputed momentum (he had enjoyed after Iowa).
he just a few days earlier had clobbered in Iowa 是做the senator的定语,这里senator应该指的是Hilary Rodham Clinton ,因为他在 New Hampshire 中败给了希拉里*克林顿。
1 .at the hands of the senator修饰defeat ,指Obama败在了Clinton手中。
2.原句主干是defeat deprived the challenger of the momentum.the challenger 当然指Obama了。
提问者对于答案的评价:简单明了且全面!还很快~哈哈,太感谢了~受教啦=^.^=