Another advantage of Life straw is that it doesn't need to be charged and you don’t need to change the filters.
The disadvantages of Life Straw is that it cannot purify sea water, and it is too expensive for Africans to use.
여기서 is that이 어법에 어긋나나요? 아닌가요?
However, even the water they get is often contaminated.
또 get is 를 어떻게 수정하는게 좋을까요