纤纤擢素手,扎扎弄机杼，这句出自哪首词?迢迢牵牛星迢迢牵牛星，皎皎河汉女。纤纤擢素手，札札弄机杼。终日不成章，泣涕零如雨。河汉清且浅，相去复几许......