watermelon复数形式是watermelons。watermelons的意思是西瓜。watermelons的例句I like cold fruit juice made from watermelons and yogurt（我喜欢由西瓜和酸奶制成的冷冻果汁）。
watermelons的例句Watermelons sell fast during the dog days（大伏天西瓜卖得快）；These are the dog days; watermelons are just in season（现在是伏天，西瓜正当令）。
