a treadwheel for small animals, used for the exercise of pets or as part of a scientific experiment; = activity wheel n. at activity, n. compounds 2.
| 单词 | θ43568 |
| 释义 | the world > animals > mammals > [noun] > wheel for measuring activity of small mammals (2) exercise wheel1902 a treadwheel for small animals, used for the exercise of pets or as part of a scientific experiment; = activity wheel n. at activity, n. compounds 2. activity wheel1929 = exercise wheel n. at exercise, n. additions. |
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