distance表距离可数吗

　　例句：

　　The onlookers stood at a respectful distance.

　　旁观者站在一定的距离之外，以示尊敬。

　　We watched the explosion from a safe distance.

　　我们在安全距离之外观看了爆破。

　　They watched the bus disappear into the distance.

　　他们注视着公共汽车消失在远方。