millstones

英 [ˈmɪlstəʊnz]

美 [ˈmɪlˌstoʊnz]

n. 磨石; 磨盘
millstone的复数

柯林斯词典

磨石；磨盘
Amillstoneis a large, flat, round stone which is one of a pair of stones used to grind grain into flour.
PHRASE 重担;重负;累赘
If you describe something asa millstoneora millstone aroundyourneck, you mean that it is a very unpleasant problem or responsibility that you cannot escape from.
1. For today's politicians, the treaty is becoming a millstone...
  对于今天的政客而言，这个条约正在变成一个包袱。
2. That contract proved to be a millstone around his neck.
  那个合同结果成了他的一个负担。