sewing jaw

例句：

1. 1. The sewing machine is essential for creating garments.
   缝纫机对于制作衣物至关重要。
2. 2. The sewing machine's jaw needs to be adjusted properly to ensure a smooth stitching process.
   缝纫机的颚部需要调整得当，以确保缝纫过程顺畅。
3. 3. The technician carefully checked the sewing machine's jaw before starting the repair work.
   技术员在开始修理工作之前仔细检查了缝纫机的颚部。