他发现很容易从这座房子溜走而不被发现。
He found it is easy to leave the house unobserved.
他们的计划被发现后，他的大部分朋友逃到国外去了，他却留下来孤军奋战。
After their plans were discovered most of his friends left the country, and he was left to hold the pass alone.
他被发现有罪，并且被定了罪。
He was found guilty and sentenced to condemnation.
