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| |||
| 无目的的; 有时打中有时打不中的 | |||
| 命中与否 | |||
| 湿刨 | |||
| 断续法; 尝试法; 碰巧的; 有时打中有时失误的 | |||
| |||
| 尝试试验 (experiment) | |||
| hit-and-miss: 14 phrases in 6 subjects |
| Agriculture | 1 |
| Automobiles | 1 |
| Aviation | 2 |
| Metallurgy | 1 |
| Oil / petroleum | 1 |
| Technology | 8 |
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