英语中表示时间的单词很多，如century世纪、year年、month月、week星期、day天、hour小时、minute分钟、second秒。moment一会、today今天、tommow明天、at once立即、a while一会儿、Last week上星期、weekend周末、morning早上、noon中午、afternoon下午、evening晚上等。
主要有time; hour; while; schedule。
It took about 4 hours and costed 29$, that's really cheap!
大概花了4小时的时间，花了29刀，着实便宜！
The process cycle time is 65 seconds.
工序节拍时间是65秒。
The election was held six months ahead of schedule.
选举提前了6个月举行。
