<iframe width="1070" height="1903" src="https://www.youtube.com/embed/nwSkxiTn9GY" title="High-speed rail | Two high-speed trains linked together" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" referrerpolicy="strict-origin-when-cross-origin" allowfullscreen></iframe>
<iframe width="1840" height="1035" src="https://www.youtube.com/embed/FNHb1saMwiA" title="【초인기】 일본의 놀라운 신칸센 커플링 시스템!" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" referrerpolicy="strict-origin-when-cross-origin" allowfullscreen></iframe>
<iframe width="1840" height="1035" src="https://www.youtube.com/embed/_vMWahWuamY" title="동대구역 KTX 산천 중련 연결 #복합열차" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" referrerpolicy="strict-origin-when-cross-origin" allowfullscreen></iframe>