Maynard spent a year travelling through Europe and Asia, giving lectures.梅纳德花了一年的时间在欧洲和亚洲游历讲学。He lectured in the United States last year.他去年在美国讲学。The teaching invitations he received from two American universities are like gold dust to his whole family.美国两所大学请他去讲学的聘书对他全家来说价值连城。