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rudistid
 rudistids
gen. 厚壳蛤壳
| reef
 reef
eng.geol. 礁石; 矿层
environ. 暗礁
geol.
hydroel.st. 矿脉; 暗礁
row. 缩帆; 缩帆结; 平结

to phrases
rudistids [ruː'distidz] n
gen. 厚壳蛤壳
rudistid: 1 phrase in 1 subject
Oil / petroleum1