慢速英语:Paintable Solar Cells May Replace Silicon-Based Devices

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短语讲解：

1. But an American researcher says manufacturers soon may be able to create solar panels with safe, non-toxic solutions.

be able to 能够
例句：He will be able to take up his normal routine shortly.
他不久就能处理日常事务。

2. Solar cell technology currently depends on costly photovoltaic materials, such as silicon and cadmium telluride.

depend on 依赖; 相信; 信赖
例句：Can I depend on you?
我可以信任你吗？

3. Individual cells can be connected to build up electric current or voltage.

build up 逐步建立; 增进
例句：Take part in the physical exercises and build up your strength.
参加体育活动增强体力。

4. He hopes that more research will lead to the increased efficiency of paintable solar cells.

lead to 导致
例句：Economic models often lead to the study of systems of equations.
经济模型经常导致对方程组的研究。