下降

• Her books have gone off in recent years .
  近年来她写的书质量下降了。
• The fibers lose strength and become brittle .
  纤维强度下降，且易断。
• Industrial production declined by 10 percent .
  工业生产下降百分之十。
• Serial determinations usually show a fall .
  连续测定通常显示下降。
• The earthworm population had declined by 70% .
  蚯蚓数量下降70。
• Deep inspiration causes the liver to descend .
  深吸气使肝脏下降。
• The fall in digestibility is quite rapid .
  其消化率下降是很快的。
• Loss of pressure had not registered on the dials .
  刻度盘未记录压力下降。
• The load reaches a maximum and then drops down .
  载荷在达到最大值后下降。
• Body weight and physical strength diminish rapidly .
  体重和体力迅速下降。