In addition to visual tuning via meter, the GA-30 can play reference pitches from its internal speaker (Sound Out) for tuning by ear.

除了通过视觉调谐米的GA - 30可以发挥其内置扬声器(声音输出)，供参考球场耳调整。

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For example, the visual system may provide strong cues of self-motion while the vestibular system in your inner ear tells your brain that your head is stationary.

例如，当你内耳里的前庭系统告诉你的大脑你的头是固定的同时，你的视觉系统却给你自身运动的强烈暗示。

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RFID ear tags for electronic and visual identification of the cattle.

这种耳标签是用来做牛群电子视觉鉴定的。

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It can be done by ear, but musical notation helps by turning sound into a visual medium, a common language for the consistent creation and sharing of the music.

FORBES: The Shape of Things to Come