- double-polling
- 双重: double; dual; twofold; dupli ...
- 探询: make cautious inquiries abou ...
- 探询: make cautious inquiries about; try to sound out; inquire about; polling; poll 探询情况 inquire about the situation
- 侧重探讨: discussion paid particular emphasis on exploring
- 多重探测器: multiple detector
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