Syllable is a nonsignificant composite sound, made up of a mute and a Letter having a sound (a vowel or semivowel ); for GR, without an A, is just as much a Syllable as GRA, with an A.

音节是由一个哑音字母和一个发声字母（元音或者半元音）构成的无意义的复合声音，没有A时GR是一个音节，而有A时GRA也是一个音节。

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A Syllable is a nonsignificant composite sound, made up of a mute and a Letter having a sound (a vowel or semivowel); for GR, without an a, is just as much a Syllable as GRA, with an a.

音节是由一个哑音字母和一个发声字母(元音或者半元音)构成的无意义的复合声音，没有A时GR是一个音节，而有a时gra也是一个音节。

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The composite video signal is transmitted as an AM signal and the sound as an FM signal on these channels.

在每个频道中，组合视频信号被当作调幅（AM）信号传输，声音信号作为FM（调频）信号传输。

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"How the sound reflects off this reflecting surface with this composite object on it - which is pretty big and has a cloaking shell on it - really reflects... just like a flat surface does, " Dr Cummer said.

BBC: Acoustic 'cloaking device' shields objects from sound