你可以用瓜皮做肥料。

You can use the rind as compost.

我把瓜皮扔进了垃圾桶。

I threw the rind into the trash can.

瓜皮很硬，不容易切开。

The rind is hard and difficult to cut.

我们把瓜皮留给了兔子吃。

We left the rind for the rabbits to eat.

他喜欢吃西瓜，但不喜欢瓜皮。

He likes eating watermelon but not the rind.

个头大的、椭圆形或圆形的瓜，绿色的硬瓜皮，水分多的、红色的果肉，偶尔果肉微黄色。

Large oblong or roundish melon with a hard green rind and sweet watery red or occasionally yellowish pulp.

耐贮耐运性好，瓜皮薄而韧，货架期长。

Resistance to lay aside resistance of good luck, watermelon, thin and toughening shelf life long.

日后又在瓜皮刻上字画，为孔府菜一道名馔。

Later, the chef carve calligraphy and painting on the melon, and the dish becomes a famous Confucius Family dish.