seam

牛仔裤的接缝处开始脱线了。

The ___seam of the jeans is starting to come apart.

这件衬衫的接缝处有点开线了。

The ___seam on this shirt is starting to come undone.

地质学家正在研究岩石层之间的接缝线。

Geologists are studying the ___seam between the rock layers.