iOS里边，avspeech支持的语言种类
avspeech支持的语言种类包括：
"[AVSpeechSynthesisVoice 0x978a0b0]Language: th-TH",
"[AVSpeechSynthesisVoice 0x977a450]Language: pt-BR",
"[AVSpeechSynthesisVoice 0x977a480]Language: sk-SK",
"[AVSpeechSynthesisVoice 0x978ad50]Language: fr-CA",
"[AVSpeechSynthesisVoice 0x978ada0]Language: ro-RO",
"[AVSpeechSynthesisVoice 0x97823f0]Language: no-NO",
"[AVSpeechSynthesisVoice 0x978e7b0]Language: fi-FI",
"[AVSpeechSynthesisVoice 0x978af50]Language: pl-PL",
"[AVSpeechSynthesisVoice 0x978afa0]Language: de-DE",
"[AVSpeechSynthesisVoice 0x978e390]Language:nl-NL",
"[AVSpeechSynthesisVoice 0x978b030]Language: id-ID",
"[AVSpeechSynthesisVoice 0x978b080]Language: tr-TR",
"[AVSpeechSynthesisVoice 0x978b0d0]Language: it-IT",
"[AVSpeechSynthesisVoice 0x978b120]Language: pt-PT",
"[AVSpeechSynthesisVoice 0x978b170]Language: fr-FR",
"[AVSpeechSynthesisVoice 0x978b1c0]Language: ru-RU",
"[AVSpeechSynthesisVoice0x978b210]Language: es-MX",
"[AVSpeechSynthesisVoice 0x978b2d0]Language: zh-HK",
"[AVSpeechSynthesisVoice 0x978b320]Language: sv-SE",
"[AVSpeechSynthesisVoice 0x978b010]Language: hu-HU",
"[AVSpeechSynthesisVoice 0x978b440]Language: zh-TW",
"[AVSpeechSynthesisVoice 0x978b490]Language: es-ES",
"[AVSpeechSynthesisVoice 0x978b4e0]Language: zh-CN",
"[AVSpeechSynthesisVoice 0x978b530]Language: nl-BE",
"[AVSpeechSynthesisVoice 0x978b580]Language: en-GB",
"[AVSpeechSynthesisVoice 0x978b5d0]Language: ar-SA",
"[AVSpeechSynthesisVoice 0x978b620]Language: ko-KR",
"[AVSpeechSynthesisVoice 0x978b670]Language: cs-CZ",
"[AVSpeechSynthesisVoice 0x978b6c0]Language: en-ZA",
"[AVSpeechSynthesisVoice 0x978aed0]Language: en-AU",
"[AVSpeechSynthesisVoice 0x978af20]Language: da-DK",
"[AVSpeechSynthesisVoice 0x978b810]Language: en-US",
"[AVSpeechSynthesisVoice 0x978b860]Language: en-IE",
"[AVSpeechSynthesisVoice 0x978b8b0]Language: hi-IN",
"[AVSpeechSynthesisVoice 0x978b900]Language: el-GR",
"[AVSpeechSynthesisVoice 0x978b950]Language: ja-JP")
对应国家
中文(简体中文)
阿拉伯语(沙特阿拉伯)
中文(普通话)
中文(香港)
中文(台湾)
捷克
丹麦
荷兰语(比利时)
荷兰语
英语(澳大利亚)
英语(英国)
英语(爱尔兰)
英语(美国)
英语(南非)
芬兰语
法语(加拿大)
法语(标准)
德语(标准)
希腊语
北印度语
匈牙利语
印尼语
意大利语(标准)
日语
韩语
挪威语
波兰语
葡萄牙语(巴西)
葡萄牙语(葡萄牙)
罗马尼亚语
俄语
斯洛伐克语
西班牙语
西班牙语(墨西哥)
瑞典语
泰语
土耳其语