Yesterday we went for a flight around the area in an old R4D. The R4D was the Navy version of the Douglas DC-3.

昨天，我们乘坐一架老式的R4D飞机在周围兜了一圈，这架R4D是道格拉斯dc - 3的海军版。

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There were several versions of the R4D, this particular aircraft was one of only 30 configured as one of the more interesting variants, the R4D-6S, which was used for anti-submarine warfare.

有好几个版本的R4D ，这架飞机是特别的一个只有30设定为一个比较有趣的变种，该R4D - 6S ，这是用于反潜作战。

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