They will work the hardest when they discover something they really want to do.

当他们真正想去从事某项工作时，他们会尽最大的努力去做好。

youdao

Rectangular color schemes are not only the most complex, but the hardest to work with.

矩形选色法不仅是最复杂的，而且是最难搞懂的。

youdao

It was the hardest work I had ever done.

那是我做过的最艰难的工作。

youdao

Also I am from Milan, the city where people work the hardest.

BBC: In quotes: Italy's Silvio Berlusconi in his own words

Mr McKenzie, vice principal of Morley Academy in Leeds, says this paper is marketed at the students who would have had to work the hardest to achieve a C or better and who needed the grade to enter apprenticeships, employment or further education.

BBC: English GCSE: Senior exam board figure quits AQA

The hardest work of analytics is modeling various scenarios and determining the best path forward.

FORBES: Evaluating Energy Management Maturity: A Checklist for CIOs