水位达到一定高度时，水将推动一个控制杆，从而显示时间。
When the water reaches a certain level, it moves a lever and this shows the hours.
在技艺达到一定高度后，科学和艺术，便开始在美感、柔性、形式上趋向一同。
After a certain high level of technical skill is achieved, science and art tend to coalesce in esthetics, plasticity, and form.
然而，货架或阁楼平台达到一定高度后，货物存取速度就会因而受到限制，减低仓库的运作效率。
However, as height of racking system or shelf platform increases, picking rate would drop accordingly, and operation efficiency of warehouse would also be affected.
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