reference to提到referencen.参考；参照；出处；推荐人；推荐函v.注明出处；附参考资料reference azimuth基准方位reference address[计]基准[转换]地址reference ceramic标准材料reference impluse基准脉冲references points起算点reference circuit基准电路reference station参证站,参考港reference counter引用计数器reference signals参考信号reference channel参考通道

1. We are on Eastern Standard Time.
   我们使用东部标准时间。
2. Central time is an hour later than the time in the Rocky Mountains.
   中部标准时间比洛矶山时间迟一个小时。