来自metal的拼写变体。后产生词义上的差别。

1. The added competition keeps them on their mettle.

加赛让他们全力以赴。

2. The next game will be a real test of their mettle.

下一场比赛就要看他们的拼搏精神了。

3. When the seas are in turmoil , heroes are on their mettle.

沧海横流,方显出英雄本色.

4. Each and every one of these soldiers has proved his mettle.

这些战士个个都是好样的.

5. It takes a man of mettle to keep a family safe and comfortable in this troubled world.

在这个动荡不安的世界，只有勇敢的男人才能给家人带来安全和舒适。