It's still extremely difficult to get tenure.

要取得终身职位仍然极其困难。

《牛津词典》

She found it extremely difficult to get a job.

她发觉找工作极其困难。

《牛津词典》

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Scientists now know that two conditions make climbing at heights over eight thousand meters extremely difficult.

VOA: special.2010.06.30

Well, Wright finds this an extremely difficult request to respond to.

理查做不到。

耶鲁公开课 - 1945年后的美国小说课程节选

It was extremely difficult.

非常难。

未来的医生 - SpeakingMax英语口语达人

Unlike most other types of consumer credit, student debt is extremely difficult to discharge in bankruptcy.

FORBES: Federal Student Lending Swells

Once you lose your edge in technology, it is extremely difficult to come back.

FORBES: The Resurrection of NCR

The power of money makes it extremely difficult for politicians to go out on a limb.

CNN: Why can't Obama reform government?