computation of duration of punishment

英 [ˌkɒmpjuˈteɪʃn ɒv djuˈreɪʃn ɒv ˈpʌnɪʃmənt] 美 [ˌkɑːmpjuˈteɪʃn əv duˈreɪʃn əv ˈpʌnɪʃmənt]
computation of duration of punishment
计算刑期