"And" in "John and Mary" or in "John walked and Mary rode" is a coordinating conjunction; and so is "or" in "will you go or stay??
在“John and Mary”或者“John walked and Mary rode”中，“and”一词是并列连词；在“will you go or stay”中的“or”也是并列连词。
A good agent for chemical terrorism should be colorless and odorless and inexpensive and readily available and not detectable until symptoms are experienced.
She tackles the topics which come her way large and small, intense and light-hearted with equal parts of serious advice, reference to social and psychological experts, and a good helping of wit.