旋转炮塔用于观察等的小型圆形或半圆形建筑物，装在有履带的装甲车上。
A small rounded and domed structure, as for observation, on a tracked, armored vehicle.
至今为止，我的童年是在欧洲中心的城市来来往往中度过的，因此，菲尔德博物馆还是比较符合我心目中“博物馆”这个概念的，不过半圆形的石头建筑并没什么特别的。
I had spent my childhood thus far being carted around the capital cities of Europe, so the Field Museum satisfied my idea of "Museum," but its domed stone facade was nothing exceptional.
拱门和半圆形台阶以及周围看起来像建筑的房间让人想起城市广场。
The arches and semi-circular steps are reminiscent of a city square, with the rooms around looking like buildings.
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