Thigh clearance between the slider and the seamedge causing slider to operate with difficulty.
拉链牙与布边的距离太近，导致拉链拉合有困难。
2
Take something long (I used a chopstick, but the end of a pencil or even a pair of scissors will also work well), slip it inside, and nudge the seam into a nice smooth edge.
用个长的东西(我用的是筷子，不过铅笔头甚至剪子也都行)，深入里面，将接缝边缘推的光滑美观。
3
I did the seam, then a stitch and overcast along the edge and another overcast only stitch over it again.