1.Jaron's hi-tech method of generating visitable worlds had been pioneered years earlier by institutional researchers including NASA.
美国宇航局等机构早在几年前就开始研发这种生成可造访的世界的技术了。
2.A wildlifepreserve visitable only during the summer months.
只有在夏季月份才对外开放的野生动物。
