一双脚陷在泥里，拔不出来。 ( A pair of feet were stuck in the mud and could not be pulled out. )

他先倒立，猛然双脚落地连续翻滚，动作干净利落。 ( He first stood upside down, rolled his feet on the ground, and rolled continuously. )

双脚一登，身体一纵，就过了水沟。 ( As soon as you got on your feet, your body stretched across the ditch. )