back bone
柯林斯词典
1. N-COUNT Your backbone is the column of small linked bones down the middle of your back. 脊骨
2. N-UNCOUNT If you say that someone has no backbone, you think that they do not have the courage to do things which need to be done. 骨气[oft with brd-neg]
You might be taking drastic measures and you've got to have the backbone to do that. 你可能在采取极端措施，而且你得有骨气做它。
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