The principle of the official system reflected strict hierarchy.

用荫原则体现了严格的等级制。

youdao

The official system in our country in ancient times is a cultural treasure left by our ancestors.

我国古代职官制度是我们祖先留下的一份宝贵的文化财富。

youdao

Note that these results are not tuned for optimal performance and should not be considered official results for the system.

注意，这些结果没有针对最优性能进行调优，不应被视为针对系统的正式结果。

youdao

Reck wrote in her research that even in the European Union, where legislative efforts have tried to boost the collection of electrical and electronic waste, only 25% to 40% is collected and treated in the official system.

FORBES: INTERVIEW: Recycling Of Specialty Metals Needs Improvement - Yale Researcher

On Monday the teams were met with lashing rain and by Tuesday this had turned to hail (though only on Turns 1-16, according to the official timing system).

BBC: F1 teams face testing times

Uefa used the five-official system at last year's under-19 European Championship qualifying matches in Slovenia, Hungary and Cyprus, where it was hailed a success.

BBC: Uefa trials new refereeing system