Here are some examples that show the usage of 등.
갑각류는 게, 가재, 새우, 따깨비 등의 절지동물을 말한다.
Crustaceans mean arthropods such as
crabs, lobsters, shrimps, barnacles and so on.
동남아시아는 아시아의 남동부를 지칭하며 베트남, 필리핀, 인도네시아, 태국 등의 나라를 포함한다.
Southeast Asia refers to the Southeastern part of Asia which includes countries
like Vietnam, The Philippines, Indonesia, Thailand, and so on.
홍수, 산불, 태풍 등 많은 천재지변이 발생하고 있다.
A great number of natural disasters are occurring, including floods, forest fires, and typhoons.
The third example might be particularly interesting because it puts [홍수, 산불, 태풍 등] and [많은 천재지변] in an appositive relation. 등 is often used like this. The other examples can also drop 의 after 등 this way, but unlike the third one, they seem to sound better with it included.