crustKK [krʌst] /kɹʌst/發音名詞1麵包皮、外皮He cut the crusts off the sandwiches for the children.他把三明治的麵包皮切掉給小孩吃。2派皮、餅皮The apple pie had a golden, flaky crust.這個蘋果派的派皮金黃又酥脆。3地殼Earthquakes happen when plates in the earth's crust shift.當地殼的板塊移動時就會發生地震。4硬殼、硬皮、結殼A thin crust of ice had formed on the pond overnight.池塘表面一夜之間結了一層薄冰殼。動詞1結硬皮、結殼Snow had melted and crusted over on the driveway.車道上的雪融化後又結成了一層硬殼。