He levelled the achromatic at Sirius.

他将消色差望远镜对准天狼星。

Knotted at her throat she wore a lilac scarf that even in the achromatic sunshine cast its color up to her face and down around her moving feet in a lilac shadow.

她的脖子上系着一条淡紫色的围巾，即使在无色的阳光下，它的颜色也一直投射到她的脸上，并在她移动的脚周围投射出淡紫色的阴影。