a sit-down protest的用法和样例：
- He was not a man to sit down with affront.
- Let's sit down a minute to catch our breath.
- Do you have a job where I can sit down?
- Do they have biscuits in China? It sounds like you need one, together with a nice cup of tea and a sit down.
- We came to a bar nearby and had a sit down afterwards. Chloe is waiting in her pram quietly for us to order our drinks.
- Would you care to sit down for a while?