We could do it so that when you take the two pictures, you'd have four days to change your mind, or we're doing another course where you take the two pictures and you make up your mind right away and you can never change it.
一是你拍两张照片， 然后有四天来选择保留哪张照片。 另外一种是你拍摄两张照片， 然后当机立断做选择。