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

You'll be hard pushed to finish this today.

要你今天做完这件事会很难。

《牛津词典》

Everyone at the site worked hard to finish building the tunnel on time and more than 10 latest techniques were developed while the workers were doing this great project.

现场的每个人都努力工作，按时完成隧道的建设，在工人们进行这项伟大工程的同时，还开发了10多种最新的技术。

youdao

Three hours of cooking make a beet impressively luxuriant and sugary, but the dish is hard to finish.

NEWYORKER: Aska

Its been very hectic here all day with a roving reporters working hard to finish their radio show!

BBC: School Report Shout Out Wall

The stock was up more than 3% in the morning, but reversed hard to finish the day down 3.4%.

FORBES: Rally Gets A Rest As Apple And Google Slip A Bit