| 词汇 | shoot one-s bolt |
| 词源 | shoot one’s bolt. The bolt in this phrase, he’s shot his bolt, meaning he’s finished with his efforts, is not a door bolt, but an arrow—a bolt being an arrow with a bulletlike knob. Among other words and phrases owing their origin to the arrow are thunderbolt, a bolt from the blue, “a complete surprise,” and to bolt upright. |
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