1·Injections were introduced in 1978 as a supposedly more humane alternative to other forms of capital punishment-hanging, firing squad, electrocution and the gas chamber.
1978年，注射式死刑作为一种相较于绞杀、射杀、电刑以及毒气室等执行死刑的手段更为人道的选择方案而引入美国。
2·Other states with capital punishment prefer lethal injections. A few allow hangings and firing squads, and nine let inmates choose electrocution in some cases, but these options are seldom used.
其他存在死刑的州偏向于采用注射死刑，少部分的州则允许采用绞刑以及枪决，并有九个州允许囚犯在某些情况下选择电刑，但极少有人做这样的选择。
3·Methods of execution used in 2010 included beheading, electrocution, hanging, lethal injection and shooting, the group said.
在2010年执行死刑的方式中有斩首，电刑，绞刑，注射处死，枪决。
4·William Kemmler becomes the first person ever executed using electrocution.
凯姆勒(William Kemmler)成为至今使用电刑处决的第一个人。
5·A few allow hangings and firing squads, and nine let inmates choose electrocution in some cases, but these options are seldom used.
有一些州允许绞刑和枪毙，还有9个州在某些情况下会让囚犯选择电刑，但是这些方法很少用到。