Take a comfortably wide stance and flex your knees a little...双腿适度分开站立，双膝稍稍弯曲。I was required to hold out my arms and flex my pectorals.我被要求伸展手臂，收紧胸肌。...a two-bar electric fire with a frayed flex.电线已经磨损的双片电热炉Take a comfor...
I was required to hold out my arms and flex my pectorals.我被要求伸展手臂，收紧胸肌。Take a comfortably wide stance and flex your knees a little.双腿适度分开站立，双膝稍稍弯曲。Side cutters are useful for cutting electrical flex to length.切边钳适用于剪切电线....
The cartilage in such areas is almost inextensible.这些部位的软骨几乎一点儿也不能伸展.Since the cord connecting the two blocks is inextensible, the accelerations are the same.由于连接两物块的绳子无伸缩性, 因此它们的加速度相同....
They went forward as briskly as they could on the uneven causeway.他们用尽可能快的速度,在高低不平的堤上继续前进.The causeway to the island is only accessible at low tide.通往该岛的堤道只有在枯潮时才能通行。Bombay is linked to the mainland by a causeway.孟买和本土间有...