1. strep throat
链球菌感染的咽喉
2. supersede
If something supersedes something newer, it is replaced because it has become old-fashion or unacceptable.
e.g. Hand tools are relics of the past that have now been superseded by the machine.
3. presumption
A presumption is something that is accepted as true but is not certain to be true.
e.g. I am having to make a lot of presumption since I don't really know anything about the case.
