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The idea of analysing or synthesising small quantities of chemicals in a chip-sized apparatus is not new, but labs on chips have conventionally relied on systems of tiny pipes etched into them to move the chemicals around.

在一个芯片大小的设备上分析、合成少量化学物质的想法并不新鲜，但芯片上的实验室仍旧依靠蚀刻在芯片上细小的管道系统输送化学物质。

At 17 years, one month and 22 days, the striker etched his name into the record books and took the mantle from Lionel Messi, who was nearly eight-and-a-half months older when he scored on May 1, 2005 against Albacete.

这位射手已经把自己的名字盖过了在2005/5/1巴萨对阿尔巴塞特进球的梅西，铭记在俱乐部历史上，而当时进球的梅西是十七岁十个月零七天。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。