Your brother left his bag of film on the ferryboat.
你哥哥将他的旅行袋遗放在渡船上了。
Don't underestimate the difficulties of the work.
不要低估了这项工作的限巨性。
an Englishman, Sir John Hawkwood, made the remarkable discovery that people would rather pay large sums of money than have their life work destroyed by gangsters.