- blow the whistle告发(...)， 揭发(...);
- bell and whistle sign铃铛和哨子标志
- call signn.（船舶的）信号，（电台的）呼号;
- dollar sign金额符号;
- division signn.除号;
- equal signn.等号;
- Gottron sign[医]戈特龙征;
- Heliotrope sign螺旋形标志
- multiplication signn.乘法;
- minus sign减号;
- neon signn.霓虹灯;
- plus sign加号;
- root sign[医]根性征;
- Romberg's sign罗姆伯格氏征;
- road sign交通标志;路标;
- radical signn.根号;
- a sign of一个……的象征;
- railway warning sign铁路警告标志;
- street sign路标;
- station warning sign进站预告标;
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