pulleys的例句（pulleys在句子中的用法）

• Block and tackle: Combination of pulleys with rope or cable, commonly used to augment pulling force. 滑轮和滑车组: 带绳索和缆绳的滑轮组, 通常用于增大拉力.
• Among them were rickshaw pulleys, peddlers, policemen and servants. 这些人有的拉车,有的做小买卖, 有的当巡警,有的当仆人.
• a system of ropes and pulleys 绳索滑轮系统
• Levers and pulleys are simple machines. 杠杆和滑轮是简单机械.