Performing this garment on the stage can remind people that its time to save the world and recycle.
这件衣服在舞台表演上可以提醒人们，它的时间来拯救世界和回收。
The ultrasonic extraction can be done in a shorter time, and its solvent is easier to recycle, which is conducive to further separation or purification of tannin or making further study on it.
超声技术可以缩短提取时间，溶剂易回收，有利于下一步鞣质的分离纯化及更深度的研究。
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