You'll need a system with the capability of processing sound input, preferably from an integrated microphone, although any sound source capable of producing discrete tonal events will suffice.

需要一个能够处理声音输入的系统，虽然能够生成离散音调事件的任何声源都可以满足要求，但最好还是选用功能齐全的麦克风。

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The plastic horns became a hallmarkof the World Cup in South Africa, producing a monotonous droning sound which provided a backdropfor every match.

这种塑料喇叭成为南非世界杯的一个印记，它所发出的单调的嗡嗡声成为每场比赛的背景声音。

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The air inside the space vibrates fast, producing a sound.

空间里的空气振动得很快，发出了声响。

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The universal use of the telephone will, of of course, be viewed with disapprobation by the sound-producing part of the community, just as the introduction of labor-saving machines was met by the hostility of the laboring classes.

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Of course, losing less today may not sound thrilling but it does translate into producing better long-term portfolio returns by avoiding crippling losses.

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African countries are seeing how sound governance, economic and political stability and pro-market economic policies are producing a new entrepreneurial class eager to create new industries and services to meet the needs of growing numbers emerging from poverty.

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