비디오 자료 : Click for video 비디오자료 New Words ballast heavy material used to make a ship steady or control the rising and falling of a vessel like a balloon buoyant able to float, cheerful and carefree clamber to climb awkwardly detach to seperate from eerie causing uneasiness; strange or mysterious fathom a length of six feet, used in measuring [...]

강좌:미국단어 7학년 9~12과 > 단어7_9