交通: 1.(往来通达) unobstructed : 阡陌交通 crisscross of paths in fields2.(运输) traffic; communications; transportation 短语和例子交通便利 have transport facilities; 交通繁忙 heavy traffic; 妨碍交通 interfere with the tr
辅助控制器: auxiliary control unitpilot controllersecondary controllersub controlsubcontrol