但因为Black5引擎是为路轨模拟器制作的第一个模型，有时我们需要一起研究一下各种技术细节。
As the Black 5 was the first model made for Rail Simulator, some time also went into researching various techniques.
但因为Black5引擎是为路轨模拟器制作的第一个模型，有时我们需要一起研究一下各种技术细节。
As the Black 5 was the first model made for Rail Simulator, some time also went into researching various techniques.
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