The professor embarked on a lecture tour to promote his new book on educational theories.
这位教授进行了一次演讲旅行，以推广他关于教育理论的新书。
During the lecture tour, she visited several schools to inspire students with her motivational talks.
在演讲旅行期间，她访问了几所学校，通过她的激励性演讲来鼓舞学生。