例句與造句

1. If decay in primary teeth is included, these experts report, 42 percent of kindergarteners have been affected by tooth decay, half of 7-year-olds have had at least one decayed tooth and children younger than 9 have an average of nearly four decayed or filled tooth surfaces.
2. It's difficult to find decayed or filled in a sentence. 用decayed or filled造句挺難的