Opening up free of charge

• 免费开放

Opening up free of charge的用法和样例：

例句

1. This house would make entry to public museums free.
   公共博物馆应免费开放。
2. The unnamed woman brought an English-made mug in to the museum on the first Sunday of the month, when admission was free.
   这名未透露姓名的女子在本月第一个周日博物馆免费开放时带去了一个英国制造的马克杯。