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
이 유도기구는 물체의 움직임을 제어하는 데 사용됩니다.i yudogigu-neun mulche-ui umjigim-eul jeohaneun de sayongdoemnida.This inducing device is used to control the movement of objects.