The pepper was actually produced by the Indian military and used in a
poisonous spray capable of burning people's eyes. Since then, even spicier
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peppers have been developed.
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請問一下，劃線部份我可以怎麼翻呢?!

現在已有更強的防狼噴霧被發展出來一開始印度軍版>時間推移>現在又有更厲害的版本