weaken [ˈwikən]

例句:

• Never dry underwear over direct heat; it will weaken the fabric.
  不要直接加热烘干内衣，那样会损坏布料。
  
• The Bundesbank's seemingly impregnable position has begun to weaken.
  德意志联邦银行看似不可撼动的地位开始削弱了。
  
• You can weaken the tea by adding water.
  你可以加水把茶弄得淡一些.
  
• It also may weaken the immune system or trigger inflammation.
  来自SA
• Should the economy weaken, students could continue trading down.
  来自WSJ
• But Russia fears the system will weaken its nuclear deterrent.
  来自VOA
• They have not yet agreed to our requests but they are clearly weakening.
  他们还没有同意我们的要求,但态度已明显软化。
  来自《权威词典》
• The enemy's attacks weakened.
  敌人的攻击减弱了。
  来自《权威词典》
• His strength has weakened.
  他的体力下降了。
  来自《权威词典》