gauge for sleepers distance

例句：

1. 3.
   火车等的
2. 1. The engineer used a gauge to measure the length of the pipe.
   工程师使用一个测距仪来测量管子的长度。
3. 2. The car's tire pressure gauge showed that it was overinflated.
   汽车的轮胎压力计显示它的气压过高了。
4. 3. The new product is designed to meet the market's gauge for quality.
   这款新产品旨在满足市场对质量的衡量标准。