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signal/
'sɪgnl
/
1.noun [c]
(to do sth) 信号
2.noun
(indication) 暗示
3.noun [Railway]
信号机
4.noun [电子]
信号
5.vi.
to signal (to sb) (with gesture，sound) （向某人）示意
6.vi.[Auto]
(with indicator) 开信号灯示意
7.vt.[+message]
用信号示意
8.vt.[+person]
向…打手势示意
9.vt.
(indicate) 标志着
10.adjective [+triumph] [ failure]
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