所以，满足人的视觉器官是壁画设计的关键所在。

So the key purpose of fresco design is to satisfy the demand of people's visual organ.

youdao

此数字钟是一个将“时”、“分”、“秒”显示于人的视觉器官的计时装置。

This digital clock is a time-device, which can display "hour", "minute", "second".

youdao

此数字钟是一个将“时”、“分”、“秒”显示于人的视觉器官的计时装置。

This digital clock is a time-device, which can display "hour", "minute", "second".

youdao