And any mistakes in the trial assembly not only meant that the elements had to be manhandled apart and back together again using only simple trolleys (there was no room inside the hall to set up a crane), but also jeopardized the deadline for finishing the job, in which every minute counted.
一旦試組錯誤，除了要上上下下以人力和簡單的滑輪組來拆裝（因為室內無法裝大型起重機），對分秒必爭的完工期限也會耽擱。