That would be the responsibility of the buyer. We are prepared, however, to provide all the documentation costs.
那是属于买方的责任,我们仅承担提供所有文件的费用。
(A light year is the distance which light travels at 186,000 miles per second in one year,
一光年是光以每秒186,000英里的速度在一年内走的距离,