当时，海军陆战队在犹他州杜格威试验基地模拟的日本城市上空释放了炸弹蝙蝠。

During that time, the Marines conducted a successful proof of concept at Dugway Proving Grounds in Utah, where they released bats over a mock-up of a Japanese city.

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这次撞击使450磅重的返回舱一半陷入了距美军杜格威试验基地31英里远的沙漠中。

The flight had gone smoothly until moments before impact, which left the 450-pound capsule half buried in the sand about 31 miles from the U. S.

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