yǎn / shì / kāi / shǐ / hòu / yíng / guāng / píng / shàng / qīng / chǔ / de / xiǎn / shì / chū / shí / yàn / shù / jù

演示开始后，荧光屏上清楚地显示出实验数据。

After the demonstration began, the experimental data appeared clearly on the screen.