Whenever it picks up a can of drink to add to the ingredients, it examines the lid with a camera so that it can work out where to find the ring-pull.
无论给它什么罐子，它都能通过相机检查盖子并找到拉环。
2
If the pilot had to pull the "d" ring (ejection handle) in an emergency, the cables would snap the wearer's feet back under the seat to ensure a smooth and safe ejection from the aircraft.
当发生紧急情况，飞行员需要弹射时，缆绳会将马刺佩戴者的足部从座椅下方拉出来，以确保弹射安全。
3
He had helped to design the petrol engine, and plastics, and the ringpull can.