Henan airlines grounded all flights for three days .

河南航空公司所有航班将停飞三天。

The other five were grounded wednesday .

其余五架也于周三停飞。

He heard shooting and screams , then felt an explosion as a grounded helicopter was destroyed .

他听到了枪声、尖叫声，一架接地直升机被摧毁时他感到了爆炸。

Discussions of homeownership should be grounded in reality .

买不买房的讨论应该以现实为基础。

But perhaps most of all , it is grounded in pragmatism .

但或许最重要的原因在于，这是基于实用主义考虑。