The focus of the light on the solar cell can also be fine-tuned by changing the air pressure within the balloon, and thus the curvature of the mirror.

借由改变气球内的气压，就可以调整气球反射给太阳能电池的光线焦距，还有气球内的凹面镜弧度。

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The focus of the light on the solar cell can also be fine-tuned by changing the air pressure within the balloon, and thus the curvature of the mirror.

藉由改变气球内的气压，就可以调整气球反射给太阳能电池的光线焦距，还有气球内的凹面镜弧度。

youdao

At first the parade goes swimmingly, until the crowd realises the balloon will not fit under a traffic light and handlers desperately attempt to move the reindeer around the obstruction.

起初游行走得很顺畅，直到人群发现气球被一个红绿灯卡住，操作手们拼命想让驯鹿越过障碍物。

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In light of the economic impact, the importance of the balloon industry must be taken seriously.

CNN: Don't deflate the party