As it is dangerous to rely on only one means of lookout, a systematic lookout must be kept by always using a combination of several methods.
仅仅依靠一种方法进行了望是很危险的,必须结合多种方法形成了望的体系。
3
But in other points, as well as this, I was growing very lenient to my master: I was forgetting all his faults, for which I had once kepta sharp lookout.