名詞 slowness:

1. unskillfulness resulting from a lack of training
   同義詞：awkwardness, clumsiness, ineptness, ineptitude, maladroitness
2. a rate demonstrating an absence of haste or hurry
   同義詞：deliberation, deliberateness, unhurriedness
3. lack of normal development of intellectual capacities
   同義詞：retardation, mental retardation, backwardness, subnormality

1. Slowness of the heart rate, usually fewer than60 beats per minute in an adult human being.
   心搏緩慢心律緩慢，通常指成人心跳低于60次每分鐘