It usually imposes strict time limitations on the speaker, and it requires more detailed preparation than dose ordinary conversation.
公开演说者通常受严格的时间限制，故此它需要比普通交谈更细致的准备。
Object Studying acute toxicity and maximum tolerable dose of Astragalus composition F3 new preparation.
究黄芪成分f 3新制剂的急性毒性和最大耐受量。
Studying acute toxicity and maximum tolerable dose of Astragalus composition F3 new preparation.
研究黄芪成分f 3新制剂的急性毒性和最大耐受量。
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