把机针深深地插进孔的深处，然后拧紧固定机针固定螺丝。

把机针深深地插进孔的深处，然后拧紧固定机针固定螺丝。的英文翻译

基本释义

• Insert the needle into the needle bar until it will go no further. Securely tighten the needle clamping screw.