英语语法分析

This trait is very important in correctly differentiating checkered beetles from Melyridae.

这一特征对正确区分格纹甲虫和金龟子科非常重要。

The network has had a similarly checkered history.

网络有着类似的曲折历史。

BMW also has a checkered past with alternative fuels.

宝马在可替代能源方面也有一段曲折的过去。