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Ballistics don't match, and his gun was never fired.
弹道学不匹配，而且他的枪根本没有发射过。
youdao
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A ballistics expert was taking evidence at the scene of the crime.
一位弹道学家正在犯罪现场提取证据。
youdao
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A ballistics expert was taking evidence at the scene of the crime.
一位弹道学家正在犯罪现场提取证据。
youdao