1. Lashes trap debris and dirt, preventing it from coming in contact with our eyes, which could cause injuries.
睫毛能够阻止灰尘及异物进入眼睛，从而损伤眼睛。
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2. Xeros is working on a new breed of washing machines that will use only a cup of water per load, relying on reusable nylon beads to trap dirt and stains for hundreds of washes.
3. The trap mechanism should be inspected periodically and all dirt removed from working parts. Worn parts must be replaced.
应该定期检查疏水阀的使用功能，所有污垢都应该从工作部件上清除。用旧的部件必须更换。
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4. Accumulated dirt and sludge can be removed by "blowing down" through the drain in the bottom of trap.
通过疏水阀底部的排放阀可以清除累积的污垢和淤泥。
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5. But Paul McKissack, of Williamsburg, Virginia, complains he finds Tombstone too commercial. "Seeing the streets paved over rather than in dirt, it just gives me the reaction of another tourist trap."
6. But Paul McKissack, of Williamsburg, Virginia, complains he finds Tombstone too commercial. "Seeing the streets paved over rather than in dirt, it just gives me the reaction of another tourist trap."
