他从衣袋里掏出一把小钥匙，然后缓缓地将其插入锁孔里。
He took a small key from his pocket and slowly inserted it into the lock.
你把它插入机器，就可以复印了。
You insert it into the machine and you are ready to make copies.
他把枪管插入另一个人张开着的嘴里。
He pushed the barrel of the gun into the other man's open mouth.
他把枪管插入另一个人张开着的嘴里。
He pushed the barrel of the gun into the other man's open mouth.
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