各部分相互扣住。The parts interlock.他的食指扣住扳机,然后又松开了.His index finger tightened on the trigger but then relaxed again.你可以把女衫从背后扣住.You can hook up the dress at the back....

“扣住”的英语可以翻译为：uckle，button，[机] button up，fasten ...