Cream of tartar 酒石 , a weak acid, can be added to egg whites to help them foam泡沫 when they are beaten
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Some children display an unquenchable 难以抑制的 curiosity about every new thing they encounter.
Solidgeometryhasenabledastronomerstocalculatethepositionsoftheheavenlybodiesrelativetooneanother.
Cream of tartar 酒石 , a weak acid, can be added to egg whites to help them foam泡沫 when they are beaten
In1861itseemedinevitablethattheSouthernstateswouldbreakawayfromtheUnion.
Solid geometry has enabled astronomers to calculate the positions of the heavenly bodies relative to one another.