然而，它不能将三角形的桨从波浪形或圆柱形的桨中区分出来。
He was, though, unable to separate the triangular paddle from the undulating and cylindrical ones.
汉克博士和威斯·科顿接着会使用不同形状的桨——三角形、圆柱形、平板形以及波浪形——的尾流对亨利进行测试。
Dr Hanke and Mr Wieskotten then tested Henry with the wakes of paddles of different shapes: triangular, cylindrical, flat and undulating.
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