乐昌历史悠久，公元508年始设县制，距今已一千五百周年。
Lechang a long history, beginning of year 508 county-based system has been 1500 years ago.
然而，至少有一个新闻机构已开发出简化英语服务，并且距今已有相当一段时间。
But at least one news organisation has developed a simplified English service, and it did it some time back.
我国油气管道距今已有近50年的历史，而管道的设计寿命一般在30年左右，故我国许多埋地输气管道已进入事故多发期。
The oil and gas pipelines have the history of nearly 50 years in China, and pipeline design life is generally about 30 years.
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