动词短语
中文翻译：增加的量
同义词：
['added quantity', 'additional quantity']
例句：
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1.The company has increased its production capacity by 20%.
该公司已将其生产能力提高了20%。
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2. We need to add more vegetables to our diet.
我们需要在我们的饮食中添加更多的蔬菜。
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3. The new product has a higher quality than the previous one, so we have added an extra layer of protection.
新产品的质量比之前的更高，所以我们增加了一层保护。