形容词
中文翻译：固定的
同义词：
['steadfast', 'unchangeable']
例句：
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1. The plan has been fixed for months.
这个计划已经定了几个月了。
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2. The team's strategy was fixed before the game started.
球队的策略在比赛开始前就确定了。
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3. The weather forecast is fixed and cannot be changed.
天气预报是确定的，不能更改。