looseadj.松的；宽松的；不确切的；不牢固的；放纵的n.解放；放任；放纵v.弄松；释放；放枪adv.松散地loose turn大转弯; 大坡度的大半径转弯

1. A poor contact causes power to fail occasionally.
   接触不良有时会造成断电。
2. The radio wasn't working because of a loose connection in the wires.
   收音机因导线系统接触不良而不响了。