Black Friday: lifetime access is on a special offer in the app, until November 30. Black Friday: special offer on lifetime access, until November 30. Download
해일이 발생하면 많은 사람들이 위험에 처할 수 있습니다.haeil-i balsaenghamyeon manheun saramdeuri wiheom-e cheohal su issseubnida.When a tsunami occurs, many people can be in danger.