fast

• His heart began to pulse faster .
  他的心开始加快地跳动起来。
• One end of that string was not fast to my heart .
  线的一头不是系在我的心上。
• I was fast asleep in my butch at that time .
  那时，我正在我的茅舍里睡得很香。
• The development of technology has been very fast .
  科学技术的发展非常地迅速。
• Physically he was fast deteriorating .
  他的健康在急剧恶化。
• He was lying prone on the couch , fast asleep ..
  他趴在长沙发椅上，睡得很熟。
• He is sinking fast .
  他迅速地一天比一天更衰弱（快要去世）。
• Can not you run any faster than that ?
  你不能跑得再快点吗？
• It 's more convenient to eat in the fast food restaurant .
  在快餐店就餐省事。