Restarting an industrial civilisation might be a lot harder the second time round, because we have used up most of the easily available resources, from oil to high-grade ores.

重新创建一次工业文明要困难得多，因为我们已经用尽了大部分的可用资源，不论是石油还是高级矿石，那时都已经所剩不多。

youdao

High school students who study music have higher grade point averages that those who don't.

学习音乐的高中生的平均绩点要高于那些不学习音乐的。

youdao

Poor harvests of high-grade Arabica beans have also contributed to the surge in coffee prices.

优等的阿拉比克咖啡豆的低产量也是咖啡价格高的原因。

youdao

For one, liquidity remains strong in the corporate bond market, as spreads in both high yield and high grade corporates have remained relatively tight.

FORBES: Around the Cliff and Through the Woods

For a subject such as economics, applicants might have an A grade in A-level economics, but some universities might also require pupils to have a high grade at maths A-level as well.

BBC: 'Unfair' university admissions claim

Officials said the main charge was a high-grade military explosive which would have been able to bring down an aircraft, and that it could have been detonated in two ways, in case one failed.

BBC: Profile: Al-Qaeda 'bomb maker' Ibrahim al-Asiri