重点词汇
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有碍
hinder; obstruct; impede; block; hamper; interfere; inhibit; restrict
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卫生
health; hygiene; sanitation; hygienic; sanitary; sanitize; maintain hygiene
"> be bad for public sanitation
有碍
hinder; obstruct; impede; block; hamper; interfere; inhibit; restrict
卫生
health; hygiene; sanitation; hygienic; sanitary; sanitize; maintain hygiene