billet switch

例句：

1. 1. The airline has implemented a new latch switch system to improve security.
   航空公司已经实施了一种新的锁扣开关系统以提高安全性。
2. 2. The old house had a traditional latch switch that was still in use even after the renovation.
   这座老房子保留了一个传统的锁扣开关，即使在翻新后仍然在使用。
3. 3. The child learned how to operate the latch switch by watching his parents at home.
   这个孩子通过观察他的父母在家的操作学会了操作锁扣开关。