Signboards creaked and clattered in the grip of a north wind.

朔风吹着那些招牌,嚓嚓地响.

Signboards shall be made of such materials capable to last the full lifecycle under all weather conditions at site.

布告板的材料要在现场天气环境下也能持续一个周期。

Many commercial facilities shorten the opening hours for saving on electricity, and gigantic electric signboards are cut off.

为了节约用电， 很多商业设施缩短了营业时间， 同时很多大型的电子广告牌也被关闭了。