名词
中文翻译：化学保护
同义词：
['protective chemical', 'protective substance']
例句：
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1. Thecompany uses chemicals to protect its crops from pests.
该公司使用化学物质来保护作物免受害虫侵害。
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2. Chemical protection is essential for the survival of many species.
化学保护对于许多物种的生存至关重要。
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3.The new drug has been shown to have chemical protection against cancer.
新药已被证明具有抗癌的化学保护作用。