Jawaban:

1.The purpose of the notice is to inform visitors that they will be charged for using hand phone cameras, digital cameras, or video cameras in the museum area, and to provide guidelines on how to pay for the charge and use their devices responsibly.

2.Flash can be harmful to historic items and cause damage or deterioration over time. Therefore, using flash is not permitted in the museum area to protect the worth of historic items.

3.Visitors should pay for the charge at the museum counter and stick the stickers on their devices during their trip to show that they have paid. They should also keep the receipt if they are not using the devices at the museum counter.

4.If a visitor loses their sticker on their device, they will be fined. Therefore, it is important to ensure that the sticker is securely attached to the device during the visit.

5.The underlined word "ensure" means to make sure or guarantee that something happens or is done correctly. In this context, it means that visitors should make sure to stick the stickers on their devices during their trip to the museum.