The utility model is mainly formed by the connection of a movable lock catch (2) and a fixed lock catch (6) via a pin roll (5). The movable lock catch is provided with a lock tongue plug jack.
它主要由活锁扣片（2）和死锁扣片（6）通过销轴（5）连接构成，在活锁扣片上有一锁舌插孔。
Jack: I've already got the tickets reserved at the box office. You just wait for me at your place, and I'll come and pick you up at 6:30.
杰克：我已经在票房订了两张票，你在家等我就行了，我六点半开车来接你。
Jack: I've already got the tickets reserved at the box office. You just wait for me at your place, and I'll come and pick you up at 6:30.
杰克：我已经在票房订了两张票，你在家等我就行了，我六点半开车来接你。
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