break down简单

If there’s congestion or, for example, a local train breaks down, the entire high-speed network is affected.

如果出现拥堵，或者比如某列普通列车发生故障，整个高铁网络都会受到影响。

Water bottles, shopping bags, and other trash litter the planet, from Mount Everest to the Mariana Trench, because plastics are everywhere and don’t break down easily.

从珠穆朗玛峰到马里亚纳海沟，水瓶、购物袋和其他垃圾遍布地球，因为塑料无处不在，而且不易分解。

Breaking down problems into bite-sized chunks and using code to solve them becomes normal.

把问题分解成一个个小块并用代码来解决就成了常态。