我们对500名吸烟者进行了调查，发现有超过四分之三的人愿意戒烟。
We surveyed 500 smokers and found that over three quarters would like to give up.
在一项对400名成年人（他们在生活的各个方面都取得了卓越的成就）的研究中，研究人员发现，这些人中有五分之三的人要么在学校表现得很糟糕，要么在学校过得不开心。
In one study of 400 adult who had achieved distinction in all areas of life, researchers found that three-fifths of these individuals either did badly in school or were unhappy in school.
妇女目前占非正式部门工人的四分之三。 对她们来说，流动意味着没有获得保障的机会，如养老金、安全条例和医疗待遇。
Women now make up three quarters of workers in the informal sector – a move that means they have no access to protections such as pensions, safety regulations and health benefits.
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