safety latch

基本解释

My father glanced at my mother and shrugged, but for once he didn’t ask who before unchaining the safety latch.
爸爸聳聳肩，掃了眼媽媽，平生頭一遭他沒先問是誰就解開了安全閂。
When you are inside your room, please use the cat eye and the safety latch on the door as additional security measures.
您在房間時，爲了更加安全保險，請使用您房間門上的窺眡鏡及安全鎖。
0772zd.cn
Polycarbonate full-face visor complete with peak and safety latch. Supplied with screw fasteners, and a foam sealing strip, the visor can be easily attached and removed from the helmet.
配有安全釦的全麪部遮陽麪罩，配有螺絲緊固件，以及泡沫密封條，遮陽麪罩可以容易地安裝在頭盔及卸除。