| 字词 | 所以然 |
| 释义 | •¶ 知其然而不知其所以然 know that sth. is so but not why it is so; know what is done but not why it is done; know what happened, but not its whys and wherefores •¶ 他说不出个所以然来。 He could not explain why it was so. |
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