1. Meanwhile, man continues in his search for new drugs, always with the hope of some day discovering more powerful — and safer — healing agents.
    与此同时，人类仍在寻求新的药物，总希望有朝一日能发现更有效、更安全的制剂。

2. Carbonated drinks are acidic, and slightly safer.
    碳酸饮料是酸性的，就更安全一些。

3. It is always wiser and safer to face up to reality, however painful it may be at the moment.
    遇事采取面对现实的态度总是比较明智和稳妥的，尽管会有暂时的痛苦。

4. It will be safer in my hands than in yours.”
    它在我手里比在你手里更安全。"

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