The triangulation of fire Clay Shaw and David Ferrie discussed 2 months before.

克莱·肖和大卫菲利二个月前商量好用三角射击
They blocked the Plaza.

他们封锁广场
They know every inch.

他们了如指掌
They've calibrated their sights. Practiced on moving targets.

他们测好视线练习活动靶
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