经济学人422:科技创新 人造水母水中游

 　　Science and Technology

　　科技

　　A synthetic¹ jellyfish that swims

　　人造水母水中游

　　Meet Medusoid, a bioengineered artificial jellyfish created by researchers at the California Institute of Technology and Harvard University.

　　这就是梅多索依德，一个通过生物工程技术制得的人工水母，他由来自加利福利亚理工学院和哈佛大学的研究者亲手打造。

　　Less than a centimetre in diameter, it was made by printing a pattern of protein onto a silicone base.

　　通过在硅树脂的基底上涂刷某种特定蛋白质制作而成的他，直径不足一厘米。

　　This pattern acted as a map on which cells from the heart muscle of a rat were grown.

　　这种特定蛋白质就好像是一张地图，在其表面上附着着生长好的老鼠心肌细胞。

　　When set free in a container of seawater, the muscles could be jolted² into action with a small electric charge to produce synchronised contractions³, allowing Medusoid to swim.

　　当我们将放入装有盐水的容器中，那些肌肉细胞在小电荷产生的同步收缩作用下，上下摆动，梅多索依德便会游动起来。

　　The work, reported in Nature Biotechnology, was carried out to study the pumping action of muscles, which could be used to help design better artificial hearts.

　　《生物科技进展》关于本项目的报道中指出，该项成果成功地研究了肌肉的抽吸作用，这有助于我们研制出更好的人工心脏。

1 synthetic   

adj.合成的，人工的；综合的；n.人工制品

参考例句：

• We felt the salesman's synthetic friendliness.我们感觉到那位销售员的虚情假意。
• It's a synthetic diamond.这是人造钻石。

2 jolted   

（使）摇动， （使）震惊( jolt的过去式和过去分词 )

参考例句：

• The truck jolted and rattled over the rough ground. 卡车嘎吱嘎吱地在凹凸不平的地面上颠簸而行。
• She was jolted out of her reverie as the door opened. 门一开就把她从幻想中惊醒。

3 contractions   

n.收缩( contraction的名词复数 )；缩减；缩略词；（分娩时）子宫收缩

参考例句：

• Contractions are much more common in speech than in writing. 缩略词在口语里比在书写中常见得多。 来自《简明英汉词典》
• Muscle contractions are powered by the chemical adenosine triphosphate(ATP ). 肌肉收缩是由化学物质三磷酸腺苷(ATP)提供动力的。 来自辞典例句