准备万一 meaning in Chinese

prepare for the worst; be prepared for an emergency; expect the worst; keep one's powder dry

I prepared to press the bell in case they did not make it
我准备万一他们追不上车子，我准备按铃，帮他们停下车子。
That evening , i almost dared not go back home to sleep , but at last forced myself to take action , and procured a sack and small bamboo stick to catch the snake , if necessary
到了晚上，我差点不敢回去睡觉，后来终于硬著头皮，拿了麻袋和一支细竹子回去，准备万一情况需要时，还是得抓它。
The god power always stands by in case we want to change our plan , in case we want to have hiers assistance because our plan has become too complicated , too troublesome to take care of . that s why every time we call out for help , help will be there
上帝的力量一直在旁边等着，准备万一你改变计画或是需要?适时给予支援，因为我们的计画已经变得太复杂太麻烦无法执行，所以每次我们求救的时候才会立刻得到帮助。