1. The roller on the machine acts as a flattener, smoothing out any wrinkles in the fabric.
- 机器上的滚轮起到了压平作用，将布料上的皱褶平整。

2. The hair straightener is a great flattener for achieving sleek, smooth hair.
- 直发器是一个非常好的压平工具，可以使头发变得光滑顺直。

3. The road construction crew used a heavy flattener to compact the soil before laying down the asphalt.
- 道路施工队在铺设沥青之前使用了一台重型压实机来压实土壤。

4. The document scanner has a built-in flattener to ensure that all pages are scanned accurately.
- 文档扫描仪内置了一个压平器，以确保所有页面都能够准确地进行扫描。

5. The pastry chef used a flattener to evenly press the dough into the tart pan.
- 糕点师使用了一个压平器将面团均匀地压入挞盘中。

6. The weight lifter used a wrist flattener to strengthen his forearm muscles.
- 举重运动员使用了一个手腕压平器来锻炼他的前臂肌肉。