The first hour on two wheels is not for the faint hearted. The lack of space means pedestrians, cyclists and vehicles all vie for pavement.

对于心脏不好的人来说，骑车的第一个小时肯定不怎么好受。行人、骑车人和汽车在车道上分寸必争。

youdao

It's a film about a serial killer and not for the faint-hearted.

这是部关于连环杀手的电影，胆小者勿近。

《柯林斯英汉双解大词典》

It has not been the path for the faint-hearted - for those who prefer leisure over work, or seek only the pleasures of riches and fame.

这条路一直都不是给不勇敢的人走的，那些偏好逸乐胜过工作，或者只想追求名利就满足的人。

youdao

Resource planning and setting appropriate project deadlines is not for the faint hearted.

FORBES: Are Deadlines Important?

In those eight weeks the administrator will be working 18-hour days so it is not for the faint hearted.

BBC: When football club administration kicks off

Entrepreneurship remains an act of faith, and never for the faint hearted.

FORBES: The Next Silicon Valley? Small Town America.