这种微酸的味道是因为含有乳酸造成的。The somewhat acid flavour is caused by the presence of lactic acid.这种化学药品在我们的试验中起酸的作用.This chemical acts a part of an acid in our experiment.有些酸的酸性强得可以烧坏木头.Some acids are strong enough to burn the wood....
Whisk the egg whites until they are foamy but not stiff.把蛋清搅至起沫而不黏稠的程度。Using a whisk, mix the yolks and sugar to a smooth paste.用打蛋器将蛋黄和糖打成均匀的糊状。Whisk 25g .1 oz. of butter into the sauce.把25克（即1盎司）黄油搅拌到酱汁里。...