(pl. apexes或apices /-pɪsiːz/)
1- the top or highest part of something, especially one forming a point顶点, 最高点, 尖端：
the apex of the roof
屋顶最高点
figurative〈喻〉the apex of his career was when he hoisted aloft the World Cup.
他高举世界杯时达到了他事业的顶峰。
1.1
- Geometry the highest point in a plane or solid figure, relative to a base line or plane【几何】顶点。
1.2
- Botany the growing point of a shoot【植】芽苗的顶端。
1.3
- the highest level of a hierarchy, organization, or other power structure regarded as a triangle or pyramid（等级制领导体系、组织、机构或其他权力结构中, 由下至上形成的金字塔式结构中的）最高层领导：
the central bank is at the apex of the financial system.
中央银行是金融系统中的最高机构。
1.4
- Motor Racing the point in turning a corner when the vehicle is closest to the edge of the track【赛车】拐弯时离赛道边缘最近的点。
1
- no obj. reach a high point or climax达到顶峰（或高潮）：
melodic lines build up to the chorus and it apexes at the solo.
优美的唱词逐渐发展到大合唱, 在独唱时达到了高潮。
2
- with obj. Motor Racing turn (a corner) very close to the edge of the track【赛车】近边缘拐弯。
词源
early 17th cent.: from Latin， 'peak， tip'.