形容词
中文翻译：不足的
同义词：
['inadequate', 'insufficient', 'insufficiently']
例句：
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1.The food was so insufficient that the children were hungry.
食物太不足了，孩子们都饿了。
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2. The teacher's explanation was insufficient to solve the problem completely.
老师的解释不足以完全解决这个问题。
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3. The budget was insufficient for the project, so we had to cut back on expenses.
预算不足以完成这个项目，所以我们不得不削减开支。