垂直: perpendicular; vertical; squ ...下潜: dive垂直下降: vertical descent垂直下落距: drop垂直下降距离: vertical drop distance垂直下降速度: rate of descent直下垂直完全: downright直下: downright; mashimo; mashita; naomoto; naoshita; nikami; noge; sosori垂直下降速率测量系统: rate-of-descent system带油门缓慢地垂直下降: settle with power身体垂直下沉至水面: body submerges vertically to the water level下潜: dive 潜水员下潜到超过危险线的深水中去了。 the diver went into the deep water beyond the danger limit.; 下潜深度 submerged depth下潜;下沈: submergence下潜板: sinking board下潜仪: diving instrument急转直下: a sudden turn [change] for the worse; a sudden change of circumstances;a sudden development of the situation; go into a precipitous decline; rapid deterioration of a situation; take a sudden decisive turn; turn abruptly towards a new vista 前方的军事局势急转直下。 the military on the front went swiftly ahead. 股票市场行情急转直下。 the stock market turned down sharply急遽直下: (the situation) took a sharp turn for the worse曲池穴直下: directly below the point quchi雨一直下: dj zhanglei; rain continuously under; raining constantly直上直下: perpendicular直上直下的: flying直下沉井法: sinking shaft直下式入光: bottom lighting垂直: perpendicular; vertical; squareness; verticality; perpendicularity 两线垂直相交。the two lines meet at right angles. 设 ab 垂直于 cd。let ab be perpendicular to cd. 当表面与射线垂直时,射线的强度最大。when a surface is perpendicular to the rays, their intensity is at its maximum 这里有人直下: and someone way down here