这一代人见证了互联网的飞速发展。

This ___generation has witnessed the rapid development of the internet.

这个习俗在我们家族已经传承了四代。

This tradition has been preserved in our family for four ___generations.

这一代年轻人更注重心理健康。

This ___generation of young people pays more attention to mental health.

太阳能电池板可以用于发电。

Solar panels are used for the ___generation of electricity.