For instance, to prevent a singularity at the big bang, two models suggest that, essentially, a strong push kept the past universe from collapsing to a point.

• 例如，其中有两个模型为了防止大霹雳理论中的奇异点，便提出基本上有个强大的推力，能让先前的宇宙不致于崩溃到一个点。