柠檬汁在我们的日常生活中有很多用处:口渴难耐时,可以饮一杯柠檬水解渴;拌沙拉时,可以加一些柠檬汁调味;储放香蕉时,还可以用柠檬汁延迟香蕉变黑的时间……除此之外,你知道吗,柠檬汁还可以用来写隐形的书信呢!实验步骤1榨取新鲜柠檬汁。方法有很多,最简单的就是将一只柠檬切开,用手使劲挤,将挤出的新鲜柠檬汁液收集起来。当然,如果家中有水果榨汁机的话,那就更方便了。2用一次性杯子取一些柠檬汁,不用太多,够蘸着写字即可。剩下的呢?兑柠檬水、拌沙拉……随你啦! Lemon juice has many uses in our daily life: When you’re thirsty, you can drink a glass of lemonade to quench your thirst. When you mix salad, you can add some lemon juice to season it. When you store bananas, you can also delay the darkening of the banana with lemon juice Time ... In addition, you know, lemon juice can also be used to write invisible letters it! Experimental steps 1 extract fresh lemon juice. There are many ways, the simplest is to cut a lemon, squeeze hard by hand, will be squeezed out of fresh lemon juice collected. Of course, it would be more convenient if there was a fruit juicer at home. 2 with disposable cups to take some lemon juice, not too much, enough to dip in writing can be. Leftover? Lemonade, mixed salad ... with you!