1. I tell him to hold tight, and back and forth he goes.
    我告诉他手要握紧，然后他一前一后地荡起来。

2. It is quite exciting to hold the center of the national stage, with the audience not knowing whether to laugh or to weep.
    想想这一点，知道这一点都令人激动不已。占据国内舞台的中心可真刺激，而台下的观众则不知是喜是忧。