英语语法分析

Syringa x hyacinthiflora is a cross between Syringa oblata and S. vulgaris.

紫丁香是扁形紫丁香和普通紫丁香的杂交品种。

Watermelon mosaic disease was found in watermelon, Citrullus vulgaris, on Hainan Island, with an incidence of 10-30%.

在海南岛的西瓜中发现了西瓜花叶病，发病率为10-30％。

Doctor: Yes, he has psoriasis vulgaris, this is the most common kind.

医生：对，他患的是寻常型银屑病，这是最普通的一种。