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| open end | |||
| open-end; open-ended; soft end | |||
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| open end | |||
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开口端 : 16 phrases in 9 subjects |
| Animal husbandry | 1 |
| Automobiles | 3 |
| Compressors | 1 |
| General | 1 |
| Mechanics | 1 |
| Oilfields | 1 |
| Plastics | 1 |
| Space | 1 |
| Technology | 6 |
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