yarn [jɑ:n]
n. 纱，纱线
例句1, The artisan spun the soft yarn into a delicate scarf that shimmered in the sunlight.
工匠将柔软的纱线纺成了一条精致的围巾，在阳光下闪闪发光。
例句2, She entertained the children with a captivating yarn about a brave knight and a magical dragon.
她给孩子们讲了一个关于勇敢骑士和神奇龙的引人入胜的故事。

yeast [ji:st]
n. 酵母，发酵粉
例句1, The baker added yeast to the dough to help it rise before baking.
面包师在烘焙前将酵母加入面团中，以帮助其发酵。
例句2, Yeast is a crucial ingredient in the fermentation process of beer and wine.
酵母是啤酒和葡萄酒发酵过程中的关键成分。
例句3, Scientists are studying the genetic structure of yeast to understand its role in biotechnology.
科学家们正在研究酵母的基因结构，以了解其在生物技

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