常见例句双语例句It also states a troubleshooting analysis of the undercarriages retractile system.还包括一次起落架收放系统的故障分析。The lens is made of cell-shaped plastic which has the beautiful retractile effect.采用蜂窝状塑胶做透镜，其表面花纹达到优美的折射效果。 返回 retractile