2. Excellent source of potassium
2.补充钾元素

As already mentioned, lemons are high in potassium, which is good for heart health, as well as brain and nerve function.
正如上面所提到的那样，柠檬里含有很高的钾元素，钾元素对保持心脏健康有益，同时又有益于头脑和神经系统。