形容词
中文翻译：无效的
同义词：
['invalid', 'invalidated', "ineffective例句：1. The medication is not valid for this age group.（这种药物对这一年龄段的人无效。）2. The building was invalidated due to structural defects.（由于结构缺陷，这座建筑被宣告无效。）3. The company's financial statements are invalid due to accounting errors.（由于会计错误，公司的财务报表是无效的。）"]
例句：
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1. The medication is not valid for this age group.
这种药物对这一年龄段的人无效。
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2. The building was invalidated due to structural defects.
由于结构缺陷，这座建筑被宣告无效。
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3. The company's financial statements are invalid due to accounting errors.
由于会计错误，公司的财务报表是无效的。