SS-20造句怎么写

In this photo, a poster purporting to lay out the true size of the USSR's collection of SS-20s, a type of ICBM, is displayed during testimony before the US Senate Foreign Relations Committee.

此照片是在美国参议院外交关系委员会举行听*时展示的一幅招贴，揭示了苏联SS-20洲际*道导*的规模。