Completely seal remaining apertures with non-combustible building materials ;
采用不可燃建筑材料完全密封其余的孔；
With one or more openings or apertures .
具一个或多个开口或孔。
The liquid exits via apertures at the side .
液体从侧面的开口流出。
Having said this I 've found that I usually shoot at shutter speeds between 10 and 20 seconds ( which gives cars time to move through the frame ) and with apertures in the mid range ( start with something around f / 8 ) .
