warning piece的意思|示意

Third part: The history proposes a piece of warning: Moral should be concerned.

第三部分：历史提出的警示：道德关怀。

I came across the construction of the bridge without warning and it captured a piece of my imagination.

我简直是偶然撞见了这座大桥，以前我都不知道。马上，我的一部分想象力就被这座建筑俘获了。

The place was not fenced properly: the role of warning protection was played by the two-meter piece of a striped tape lying on the ground.

这个地方没有很好地进行保护：警告标志仅仅是放在地上的一条2米长的条纹带。