The experiment was repeated by Professor Schwartz, and the results were the same.施瓦茨教授把这个实验重新做了一遍，所得结果相同。Dr Schwarz will be with you directly.施瓦茨医生很快就到。Before becoming a writer, Schwarz had been a cook, a cab driver and a door-to-door salesman.在成为作家前，施瓦茨曾当过厨师、出租车司机和挨户兜售的推销员。