upset cutter

例句：

1. 1. The upset cutter was a constant source of frustration for the engineer.
   这个心烦意乱的切割器一直是工程师不断烦恼的来源。
2. 2.The upset cutter had to be replaced immediately after the accident.
   事故发生后，这把心烦意乱的切割器必须立即更换。
3. 3.The upset cutter was used to cut through tough materials with ease.
   这把心烦意乱的切割器被用来轻松地切割硬材料。