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| 机器在恶劣繁重条件下使用; 大负荷工作 | |||
| 超负荷工作 | |||
| 重超负荷工作状态 | |||
| 猛力发球 (squash) | |||
| 重负荷工作状态; 超负荷工作 (状态) | |||
| 重负荷工作 | |||
| 大力发球; 炮弹式发球; 发大力球 | |||
| 超负荷工作状态; 不良使用; 困难工作条件 | |||
| hard service: 4 phrases in 3 subjects |
| Electronics | 2 |
| Project management | 1 |
| United Nations | 1 |
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