IBM made a new chip designdesign/dɪˈzaɪn/L1设计；计划a plan or drawing of how to make something and it can hold 100 billion tiny switches. The chip is as small as a fingernailfingernail/ˈfɪŋɡərneɪl/L1手指甲the hard, flat part at the end of your finger. This is a big step forward for computers. The new chip is like a tall block of flats. It has many layerslayers/ˈleɪərz/L1层；层次one flat piece on top of another flat piece of switches stacked on top of each other.
This makes the chip more powerfulpowerful/ˈpaʊərfəl/L1强大的；有力的able to do a lot of work or make big changes and it saves energyenergy/ˈenərdʒi/L1能量；能源the power that makes things work or move. But the chip will not be ready for years. The layers can get very hot because they do not turn off when they should. A computer scientist said this is the most ambitiousambitious/æmˈbɪʃəs/L2雄心勃勃的，有远大目标的having a strong desire to achieve difficult or important things. chip design.
