millstone /ˈmɪlˌstoʊn/ noun plural millstones
plural millstones
Learner's definition of MILLSTONE
[count]
1
: either one of two large, round stones used for grinding grain in a mill（磨坊中的）磨石，磨盘
2
: a problem or responsibility that does not go away and that makes it difficult or impossible to do or achieve something磨难；重担 -
College loans can quickly become a millstone for students.大学助学贷款可能很快就成为学生的重担。
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The scandal has become a political millstone.这件丑闻成了一个政治绊脚石。
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The scandal has been a millstone around her neck.那件丑闻一直是她难以摆脱的负担。