nore or less的用法和样例：
- His explanation was more or less helpful.
- I can earn 20 a night, more or less, as a waiter.
- I've more or less finished reading the book.
- I was more or less pitiful at the news he couldn't come.
- May shipment we designate to Kyotaru 5000 tons 1.5% more or less.
- Many one or little one is indifferent to me.