| 词汇 | how long is a piece of string |
| 释义 | how long is a piece of string British, informal — used as a reply to a question when the answer is not known谁知道呢（用于回答不清楚答案的问题） “How long will you be staying?” “How long is a piece of string?”“你会待多久？”“谁知道呢。” string |
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