由选择成功的手势信号采用无害。
大拇指朝下的手势信号所传达的意思是下潜。
The "Thumbs-Down" hand signal communicates "go down" or "descend" underwater.
手语识别问题是动态手势信号即手语信号的识别问题。
The issue of sign language recognition is to recognize dynamic gesture signal, that is, to recognize sign language signal.
Other systems: the gestures that mimes use, semaphores, are all semiotic systems.
其他的系统,比如手势,模仿,信号,他们都是符号系统。
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