Here is a close-up of the fossil, after five years of cleaning, preparation and description, which was very long, as I had to expose the bones from the sandstone block I just showed you in the previous slide.
这是一块化石的特写， 它经过了5年的清理、准备和修饰——那时间非常长， 而且我需要把骨头从砂岩块中取出来 那块砂岩我在前一张片子里给大家演示了。