不变

• The amplitude at the driven end is fixed by the driving mechanism .
  由于驱动机构的作用，使驱动端的振幅保持不变。
• The child's essay was copied word for word out of an encyclopedia .
  那孩子的文章是从百科全书一字不变地照抄来的。
• They free our minds from considering our world as fixed and immutable .
  它们改变着人们将世界看作是永恒不变的观点。
• I never before saw smile caught like that, and perpetuated .
  我从来没有看见过谁的笑容陷入这样的窘况，而且持续不变。
• To show that the equation conserves the total volume is not difficult .
  要证明该方程保持了总体积不变这点是不困难的。
• The ordered suppressed castes of centuries wither here .
  几百年来传为定制、严守不变的一套等级制度一到这里都冰消瓦解了。
• Taking the transpose of both sides does not change the left-hand side of the equation .
  两边均进行转置，方程的左边不变。
• There was no change in his father's position, or in his spectral look .
  他父亲的姿势一点没有更动，阴沉的脸色也依然不变。
• The new place would be smooth, standardized, fixed .
  在新房子里，一切的一切都将是光洁平整，千篇一律，而且又是固定不变的。
• The level of the petrol in the chamber is kept constant by the action of a float .
  室内汽油的水平高度由于浮子的作用保持不变。