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
그 연구는 새로운 치료법에 대한 돌파를 가져왔다.geu yeonguneun saeroun chiryobeob-e daehan dolpareul gajyeowassda.The research brought a breakthrough in new treatment methods.