The story has a number of variants, different people talking to a taxi driver, lift operator etc. The basic point is still valid though.
关于擦鞋男孩的这个故事有若干种不同版本，不同的人是在与出租车司机、电梯操作员等进行交谈时发现股市处于泡沫的，然而，其基本思路都是站得住脚的。
Front once lift, study business English is also at study English, study language of the basic technique be similar, be just scope dissimilarity in vocabulary.
前面提过，学习商务英语也是在学习英语，学习语言的基本技巧是一样的，只是在词汇的范围上不同。
The basic principle of eddy current testing is introduced and the coil impedance responses due to the variations of the probe coil lift-off are analyzed and studied.
简要介绍了涡流检测的基本原理和涡流探头的特性； 分析和研究了涡流检测探头提离变化对阻抗的影响；
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