Dǒuqiào de shānlù ràng xǔduō yóukè wàng'ér-shēngwèi.
The steep mountain path makes many tourists balk at the very sight.
Tips
history
Roots in the Analects (《论语》): a noble figure straightens his robes and gaze so that 'people see him and feel awe'. The modern four-character form crystallized later from this Analects passage.
grammar
Often takes 令人 or 让人 before it: 令人望而生畏 = 'makes one feel intimidated at first sight'. Also works directly: 这道题望而生畏 (this problem is daunting just to look at).