When traveling by plane, we often stay strapped in for the whole flight, in case of unexpected roughair.
航空旅行时，我们通常在整个旅程中都系着安全带，以防遇到意外的恶劣气候。
2
As the air descends in to the low point of the atmospheric wave, it touches the ocean surface, causing rough waters, visible here as long, dark vertical lines.
在空气下降到大气波的低点时，与海洋的表面相接触，形成了像漫长、黑暗垂直线条那样，明显的惊涛骇浪。
3
According to the analysis of the factors in air-raid targets threat ordering, the method that using rough set theory to order targets threat is presented.