They're ready.

他们准备就绪
Kennedy's motorcade makes a turn from Main onto Houston.

肯尼迪的车在梅因转了弯去休士顿
It's going to be a turkey shoot.

那是最好时机
They don't shoot him on Houston the easiest shot for a single shooter in the Depository.

但他们没有开枪因为只有一个枪手在书库
They wait till he gets to the killing zone between 3 rifles.

他们一直等他进入三名步枪手组成的射杀区
Kennedy makes the turn from Houston onto Elm.

肯尼迪在休士顿转弯到厄尔曼街
Slowing down to some 11 miles an hour.

时速减至11公里
The shooters across Dealey Plaza tighten, taking their aim.

射击手分散在迪里广场瞄准目标
Waiting for the radio to say, "Green! Green!"

等待上级发令开枪
Or, "Abort! Abort!"

或终止行动
The first shot rings out.

第一枪响起
Sounding like a backfire, it misses the car completely.

枪声如雷贯耳但完全射不中