Talktriplite
镁磷锰石
🗣️ 情景例句
All right, ladies and gentlemen.
好啦， 女士们， 先生们。
Knowledge without practice makes but half an artist.
只有知识而无实践，只能造就半瓢水的艺术家。
Two factors weigh heavily against the effectiveness of scientific research in industry.
两个因素严重地影响工业里科学研究的效果：