It can be played on the black keys of the piano.

可以在钢琴的黑键上演奏。

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In the center of the piano are two black keys.

在钢琴的中心中是二支黑色的钥匙。

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In the center of the piano are two black keys.

在钢琴的中心中是二支黑色的钥匙。

youdao