They both had weak eyes, which I had long attributed to their chronically looking in at keyholes, and they were always at hand when not wanted; indeed that was their only reliable quality besides larceny.

他们俩的眼睛都很弱，我一直认为这是因为他们长期盯着钥匙孔看，不需要的时候他们总是在手边；事实上，这是他们除了盗窃之外唯一可靠的品质。