throw doubt upon  使人对……产生怀疑
	  throw light on sth.  解释,阐明, 使……明白(清楚)
	  throw off 匆匆脱掉, 扔掉; 摆脱
	  throw out  (1)扔掉,丢掉(2)撵走,解雇(3)放出,发出
	  throw over 背弃,抛弃,遗弃
	  throw up (1)抛起、举起或推上 (2)匆匆建造 (3)吐出;呕吐 (4)放弃;辞去
	  tick off训斥 斥责; 用记号勾出;核对
	  tidy up 收拾,整理,使整治; 收拾东西
	  tie up 束紧,缚牢;包扎, 联系
	  time and again  多次,  常常
         
 
  
