Hopkins spoke about the latest difficulties in the ground tests.

霍普金斯谈及了地面测试最近遇到的一些困难。

The ground test of the high thrust hydrogen oxygen engine lasted 100 seconds on Sunday.

周日，高推力氢氧发动机进行了100秒测试。

He said that Southeast Asia has become a test ground for laws against " fake news" .

他说，东南亚已经成为打击" 虚假新闻" 法律的试点。

And NASA has cut shorter ground tests to four huge engines from its new mega rocket.

美国国家航空航天局缩短了对新超级火箭四个巨大引擎的地面测试时间。

Boom said in a press release that its ground tests of the XB-1 will be carried out in the coming months in Colorado.

Boom公司在新闻稿中表示，XB-1飞机的地面试验将于未来几个月在科罗拉多州进行。