A still more difficult distinction is that between a sharp flexure and a fault.区别尖锐的挠曲和断层更加困难.Flexure scratched the head, said that here thing was expensive, discounts?挠挠头, 说这里东西都贵, 打折 吗 ?During left LPN , the spleen, sp...
他精通机械，了解许多有关声音的知识。He was a very mechanical person, who knew a lot about sound.这个声音的声波如图B所示。The sound waves of the voice could be diagramed as in B.听自己声音的录音回放对特德可能会有帮助。Ted might benefit from hearing his own voice recorded...