The salesman had been briefed only about the overall design and appeal of the machine, but the purchaser asked searching questions about its construction and maintenance, which left the salesman up a gum tree.

• 那位推销员仅仅简要地介绍了机器的整体设计和要求，但购买者对它的构造和维修打破砂锅问到底，这使推销员陷入了困境。