left-handedness       
noun [ U ] uk/ˌleftˈhæn.dɪd.nəs/ us/ˌleftˈhæn.dɪd.nəs/
 左撇子(状态)
the fact of using your left hand to write and do most things
  Left-handedness is largely hereditary.  左撇子大部分是遗传的。 
 He struggled to play the guitar because of his left-handedness. 他因为是左撇子,弹吉他有困难。 
 See: left-handed
 - More examples
 - Left-handedness, which is determined by genetic makeup, occurs in about 8-9 per cent of the population.
 - Left-handedness - slightly more common in men than women - is thought to be determined by our genes, with some environmental influences.
 - Left-handedness must have some advantages attached to it or it wouldn't survive in the evolutionary sense.
 - New research on chimpanzees indicates left-handedness has more to do with motor skills than with the language part of the brain as had been thought.