1. He weighed the watermelon in his hand and said it was about eight jin.

2. The seedless watermelon tastes sweet and crisp.

3. The watermelon tastes good.

4. The sunside of the watermelon is green.

5. The water melons were lying on the ground in heaps.

6. Watermelon is a kind of melon with green skin that is juicy and sweety.

7. This watermelon is so sweet and juicy.

8. I love how juicy this watermelon is.

9. Eating a slice of water-melon.

10. Melons taste better if they are chilled.

这些句子涵盖了西瓜的重量、口感、颜色和食用方式等方面。希望这些句子对你有所帮助。