In no case will they look on passively.

他们决不会在一边看热闹。

In no case have I noticed that.

我绝没有注意到那件事。

In no case should you give in.

任何情况下你都不要屈服。

In no case should we lose he art.

在任何情况下我们都决不能灰心。

In no case should we give up hope.

我们绝不能放弃希望。