tuó
steelyard weight
stone roller; to polish jade with an emery wheel
夯砣
hāng tuó
rammer
砣子
tuó zi
emery wheel
碾砣
niǎn tuó
roller
秤砣
chèng tuó
秤砣虽小压千斤
chèng tuó suī xiǎo yā qiān jīn
although small, a steelyard weight may tip a hundred pounds (idiom)
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