What does the plus sign mean?

Plus is Chinese, which means as follows:

1, plus, plus.

2, plus, otherwise.

3, slightly better than what, slightly higher than what.

4, plus, plus, positive, positive.

5, interests, favorable factors.

Plus also means add, positive, add and insert. In the use of numbers, it is often used in "plus sign" and other aspects, and there are additional literal meanings.