绳索滑轮系统a system of ropes and pulleys这块大石是用绳子和滑轮给吊起来的.The stone was lifted by means of a rope and pulley.工人把金属丝穿在滑轮上.The worker threaded the wire through the pulley....
Others who were guilty were being allowed to get off scot-free.其他犯罪人员不予处罚。They got off scot-free because of lack of evidence.由于证据不足,他们得以逍遥法外。The 42-year-old Scot has guided the team to victory in three of their last five...