smoothers

例句：

1. 1. The car's engine needs a new oil filter to keep it running smoothly.
   汽车的引擎需要一个新的油滤，以保持其顺畅运行。
2. 2. The old wooden chair has been smoothed over with a coat of paint.
   旧木椅已经被漆了一遍。
3. 3. The chef uses different types of smoothers to achieve the perfect texture in his dishes.
   厨师使用不同的平滑剂来达到他菜肴的理想质感。