This is no time to be faint-hearted.

现在不是胆怯的时候。

Don't be faint-hearted when things seem a bit slow or boring.

当事情似乎有点乏味或无聊时，不要胆怯。

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。

Naturally, faint-hearted investors failed the test.

当然，那些胆怯的投资者未能经受住市场的考验。

Fortune is not on the side of the faint-hearted.

欠缺勇气的人， 运气长远不会站在他这一边。