grease creeping

例句：

1. 1. The oil crawl is a common problem in the oil industry.
   油爬是石油工业中常见的问题。
2. 2.The oil crawl has been causing damage to the environment for years.
   油爬已经给环境造成了多年的损害。
3. 3. The oil crawl was caused by the poor maintenance of the pipeline system.
   油爬是由管道系统的维护不善引起的。