Q: How do you determine the level of difficulty for each question?

问：您如何确定每个问题的难度级别？

youdao

Frog collections and identifications add an additional level of difficulty.

青蛙收集和鉴别又给加重了我们的困难。

youdao

Of course, start along the y-axis and then horizontally. That is the same level of difficulty.

当然先沿y轴,然后水平走，难度是相同的。

youdao

With the appropriate level of difficulty, people may feel like challenging it again and again.

NEWYORKER: Master of Play

"We are seeing a level of difficulty that I think most people would be shocked at, " she said.

BBC: Devon farmers 'struggling to feed their families'

So Nagty's courses are set at a similar level of difficulty to that of a first year of a degree.

BBC: NEWS | UK | Education | What is there for bright children?