Fix grammaticality in this sentence: However, it has to be improved and developed more in-depth to ensure its safeness and enhance its feasibility.
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The new version of the, which is a new version of, is a new version of the, which is a new, which is a new, which is a new, which is a new, which is a new, which is a new, which is a new, which is a new, which is a new, which is a new, which is a new, which is a new, which is a new