例句與造句

1. A rigid framework , as of wooden beams or metal bars , designed to support a structure , such as a roof
   桁架用木棒或金屬棒做成的堅硬的構(gòu)架，用于支撐屋頂?shù)冉Y(jié)構(gòu)
2. It's difficult to find rigid framework in a sentence. 用rigid framework造句挺難的