An ion channel is a protein that lets charged particles enter or leave a cell to generate electrical signals, a basic process of nerve cell communication.

离子通道是可以让带电粒子进入或离开细胞，产生电信号的一类蛋白，是神经细胞交流的基础。

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The lower performers leave school at 15 with a basic qualification, usually in practical skills.

学习成绩不好的学生在15岁的时候带着最基本的技能离开学校，这些技能基本上是非常实用的。

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As more capabilities became available, the basic design did not leave much room for graceful extensions-a mistake the makers of mobile devices would make a decade later.

随着设备能力的不断提高，基础设计却并没有为合适地扩展留下太多的余地，10年后，移动设备的制造者复蹈前辙。

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He makes clear that any left government would do the basic things - certainly not leave Nato.

BBC: Struggling Greeks losing belief in the state

Be sure you have all the basic estate planning documents to leave your assets to the people or charities that you wish to benefit.

FORBES: After The Tax Deal: An Estate Plan Check-Up

We need to make certain we leave room for the basic research that drives our high standard of living.

FORBES: Key Energy Innovation Agency Draws Bipartisan Praise