Many schools throughout Long Island, New Jersey, and the rest of the Tri-State area remained closed, as was the case with the Washington, Baltimore and Philadelphia school systems.
整个长岛，新泽西和三州毗邻区的学校都在停课。 华盛顿，巴尔的摩的情况也是如此。
2
Aimed at tri-coordinate ultra precision machining, a stage used for tri-coordinate non-traditional machining was designed, which realizes long travel tri-coordinate ultra precision machining.