英语词汇thirty-one是什么意思，thirty-one的用法、释义、翻译、读音、例句、短语词组-英汉汉英翻译词典-觉斋网

单词	thirty-one
释义	DEFINITIVE EXAMPLES 权威例句〔black〕There are about thirty-one million blacks in the US.美国大约有3,100万黑人。柯林斯高阶
随便看	pulse cycle pulse damper pulse damping diode pulse decay time pulse deficit pulse delay pulse delay circuit pulse delay nomogram pulse delay time pulse demagnetization pulse demodulation Pulse Dialing pulse dialing pulse digit pulse discrimination circuit pulse discriminator pulse distance finder pulse distortion pulse distributor pulse Doppler radar pulse droop pulse duration pulse duration discrimination pulse duration discriminator pulse duration modulation

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