现今，家用机器人做一般的家务，而社交机器人则更像是伙伴而不仅仅是一种工具。
While household robots today do the normal housework, social robots will be much more like companions than mere tools.
这种智能芯片比火柴头还稍小，而现今最好的植入物却仅仅是如火柴盒一样大小，这种芯片通过阻断传向大脑的疼痛信号来发挥作用。
Slightly smaller than the head of a match - the best implants today are only as small as a matchbox - the chip works by blocking pain signals on their way to the brain.
和其他领域一样，科学研究也有某种时髦的存在，而现今最为热门的领域就是干细胞的研究。
LIKE other fields of endeavour, science has fashions-and one of its most fashionable areas at the moment is the study of stem cells.
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