Follows the employees of airlines companies who have signed a contract with AZT, an illegal medication in many countries at this moment, fearing that it will be the only solution available for diagnosis.
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观看部分外语对白(如英语、美语、日语、韩语、泰语等)的影视节目对口语发音和口语培训有较好的效果，可以一定程度的训练听力和发音