颌: jaw下: below; down; under; undernea ...点: drop下颌: lower jaw; underjaw; submaxi ...正中: be just what one hopes for线: thread; string; wire下颌正中关系: mandibular centric relation下颌正中囊肿: median mandibular cyst颌下点: gnathion最低点: deepest point; low-water mark; lower-most point; lowest perigee; lowest point; minimum point; nadir; rock bottom; zero正中线: linea mediana; longitudinal midline; median line上颌正中囊肿: median maxillary cyst正中线, 中线: lineae mediana; median line中线最大弧高: maximum camber of mean line下颌下三角, 下颌下区: trigooa submandibulare下颌下三角,下颌下区: submandibular trigones波最低点: nadir of s wave处于最低点: at their lows达到最低点: touch bottom; touchbottom到达最低点: reach its bottom等压最低点: isobaric minimum跌到最低点: tumble to its lowest level降至最低点: bottom out历史最低点: record low燃烧最低点: point of lowest burning