触: Ⅰ动词1.(接触) touch; contact 短语和例子游客请勿触摸陈列品。 visitors are requested not to touch the exhibits.2.(碰; 撞) strike; hit 短语和例子触雷 strike [touch off] a mine; 船触礁了。 the ship struck a rock.3.(触动) touch
垂直: perpendicular; vertical; squareness; verticality; perpendicularity 短语和例子两线垂直相交。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 surfa
