这是一项具有挑战性的工作，但我做到了。

It was a challenging job, but I did it.

法学课程非常具有挑战性。

The law course is very challenging.

现在的情况相当具有挑战性。

The present situation is quite challenging.

这个谜题迷惑地具有挑战性。

The puzzle is deceptively challenging.

建筑系的课程非常具有挑战性。

The courses in the Department of Architecture are very challenging.

商学院的课程非常具有挑战性。

The courses at business school are very challenging.

小径最陡的部分非常具有挑战性。

The steepest part of the trail is very challenging.

改掉坏习惯可能非常具有挑战性。

Breaking bad habits can be very challenging.

研究生入学考试非常具有挑战性。

The Graduate Entrance Examination is very challenging.

经济学院的课程非常具有挑战性。

The courses at the School of Economics are very challenging.