thumb operated safety catch 拇指保险卡锁
This cocks the mechanism, indicated by a red indicator to the right of the thumb safety.
这鸡的机制，由一个红色指示灯显示到拇指安全的权利。
Wind it like a watch with a key that's stored underneath the barrel, and when it's 'fully loaded' use your thumb to pull back the safety lever. Then squeeze the trigger.
用放置在枪管底端的转柄给它像手表一样上发条，当发条“全部上满”之后，用你的大拇指向后拉动枪栓，然后扣动扳机。
'The safety instruction book is like this,' he adds, holding his thumb and forefinger an inch apart.
他用拇指和食指比划出一英寸的厚度说，“安全指导手册有这么厚。”
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