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1. The gardener needs to mix the right amount of sand and clay for the potted plants.
园丁需要为盆栽植物混合适量的沙和黏土。
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2. The ancient city is buried in layers of clay and bricks.
这个古老的城市被层层的黏土和砖块所覆盖。
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3. The potter uses a special clay to create intricate designs on their pots.
陶艺家使用一种特殊的黏土来在他们的陶器上创作复杂的图案。