a spelling mistake的用法和样例：
- There's a spelling mistake here.
- She was penalized for a spelling mistake or a misplaced accent.
- I guess he made a spelling mistake in his English exercise.
- I think you make a spelling mistake, the wors should be"frieght collect"!
The meaning is:运费向收货人索取,也就是运费到付！
- He overlooked a spelling error on the first page.