Of course he's gonna arm himself.

他当然会武装自己了。

He withdrew his arm, a skeleton key was selected from the bunch, and then back went his arm to the shoulder. It was a breathless moment.

他收回手臂，从一堆万能钥匙中挑出一把，然后将手臂收回到肩膀上。这是一个令人喘不过气来的时刻。