尚雯婕第三篇，尚老师节选及译文参考：
American scientists have developed a 3D remote-controlled robot smaller than the size of a flea. Its designers hope the tiny machine will have medical uses one day.
美国科学家研制出了一种比跳蚤还小的3D遥控机器人。它的设计者希望这个小机器有一天能用于医疗。
The minuscule robot created by scientists at Northwestern University is shaped like a crab and is built using a special alloy that can take different shapes depending on the temperature.
美国西北大学的科学家们创造的这个微型机器人外形酷似一只螃蟹，它是用一种特殊合金制造的，可以根据温度的不同而呈现不同的形状。
The diminutive machine can crawl, walk, turn and jump, and is able to move at speeds of up to nearly half its body length per second.
这台小巧的机器能爬、能走、能转、能跳，移动速度可达每秒近一半身长。
The microbot’s movement is controlled with the help of a laser. The beam lands on different body parts, initiating a process of heating and cooling, which changes the bot shape, pushing it forward.
微型机器人的运动由激光控制。光束落在身体的不同部位，启动加热和冷却过程，改变机器人的形状，推动它前进。
The team hopes the tech one day be used as the basis for future robotics in the fields of medicine.
该团队希望这项技术有朝一日能成为未来医学领域机器人技术的基础。
