lemon的例句：
A lemon is an acid fruit.
柠檬是一种酸味水果。
He ate a lemon just now.
他刚才吃了一个柠檬。
I have a cherry, a lemon, and a flower.
我有一颗樱桃、一个柠檬，还有一朵小花。
Lemon juice can help to prevent economy-class syndrome by improving blood circulation.
柠檬汁通过改善血液循环来帮助预防经济舱综合症。