1.

1. 椭圆形：(4)椭圆形(elliptical)叶片中部宽而两端较狭,两侧叶缘成弧形,称为椭圆形叶. 如芫花(Daphnegenkwa),樟的叶. (5)卵形(ovate)叶片下部圆阔,上部稍狭,称为卵形叶.如向日葵,苎麻的叶. (6)菱形(rhomboidal)叶片成等边斜方形,称菱形叶.如菱,

2. 椭圆：换句话说,光的偏振性便是指行进中的光具有规律的磁振动方向,有线性(linear)、椭圆(elliptical)与圆(circular)偏振光等. 摄影时常用的偏光镜,便是应用了这些原理,将某些反射或散射所造成的光线滤去,以消除反光并增强色彩饱和度.

3. 椭圆的：elliptic vault 椭圆形拱顶 | elliptical 椭圆的 | elongation 伸长

1. 椭圆形的;椭圆的
    Something that is elliptical has the shape of an ellipse.

    e.g. ...the moon''s elliptical orbit...
           月球的椭圆形轨道
    e.g. The stadium is elliptical in plan.
           在设计图上，体育场呈椭圆形。

2. 隐讳的;间接的
    Elliptical references to something are indirect rather than clear.

    e.g. ...Kirsty Gunn''s austere, elliptical account of a childhood tragedy.
           柯丝蒂·甘对一段童年不幸遭遇的朴实、委婉的记述
    e.g. ...elliptical references to problems best not aired in public.
           对那些不宜当众谈及的问题的隐诲提及