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sandy gravel
desert. 砂砾
eng.geol. 砂質礫石; 砂礫石
geol. 砂质砾石
oil 砂砾石
tech. 含砂砾土; 含砂砾石; 砂质砾 (石)
sandy gravel
: 10 phrases in 3 subjects
Bridge construction1
Oil / petroleum1
Technology8