有效
word A2- effective
- in effect
- valid
Its characters
Words with it
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只要大家积少成多，就能有效缓解外卖包装带来的环境危机。
科学研究发现，每天接受两个小时的户外自然光，能有效预防近视。
最后，品尝茶水当然是最直接、最有效的方法。
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