With the movement of his head up and down he nodded into the marriage contract. 他的头上下摆动，表示他同意了这份婚姻契约。
The magnitude of this long up-and-down yield movement dwarfs by a very wide margin all four previous secular swings in American financial history. 本次长期收益的上下变动幅度，在美国金融历史上，大面上讲，可缩短为四个前期长期摆动幅度。
