Mr Potts's colleagues changed the hats every day. The result was that on alternate days he wore the big hat and then the small one.

伯茨先生的同事们每天都换帽子。结果就是，伯茨先生一天戴大帽子，一天戴小帽子。

A red alert, issued for the first time in three years, means that cars with odd and even number plates will be banned from driving on alternate days, starting from this morning.

这是北京三年来首次启动红色预警，按要求从今天早上开始，全市范围内将实施机动车单双号行驶措施，实行单号单日、双号双日行驶。

Pairs of workers are expected to report to the office on alternate days to ensure a desk is free, with employees asked to work from their shared spaces at least two days a week.

成对的员工需要隔天到办公室报到，以确保办公桌是空闲的，员工每周至少有两天要在共享的空间里工作。