This method was very effective as the glass had not touched any surfaces between being soft and becoming hard, so it stayed perfectly unblemished, with a "fire finish".

这个方法非常有效，因为玻璃在从软变硬的过程中并没有触及任何物体的表面，因而在经过“火抛光”处理后能保持完美无瑕。

youdao

The snag is that unprofitable companies, which should have been squeezed out by competition, have remained alive because it is so hard to fire workers.

问题在于，那些本应被竞争挤出市场的无利可图的公司，却因为裁员如此之难而存活了下来。

youdao

In Sichuan, soldiers spent a hard time creeping across Luding Chain Bridge, which was made up of 13 iron chains, in the middle of gun fire.

在四川，士兵们在炮火中艰难地爬过由13条铁链组成的泸定铁桥。

youdao

Clay becomes very hard when it is put in a fire or a special oven called a kiln.

VOA: special.2009.01.12

If you squeeze the trigger of a gun really hard and really fast, it doesn't fire any faster or harder than if you just squeezed it gently.

快速有力地扣动扳机,并不比你轻扣扳机,射出的更加快速或更加有力

耶鲁公开课 - 心理学导论课程节选

South African labour laws make it hard to fire workers, which deters companies from hiring them in the first place.

ECONOMIST: Schumpeter

One sign of greater labour-market flexibility is that companies are bypassing stringent job-protection laws that make it hard to fire workers.

ECONOMIST: Growth and jobs

The snag is that unprofitable companies, which should have been squeezed out by competition, have remained alive because it is so hard to fire workers.

ECONOMIST: India's economy