He levelled the achromatic at Sirius.

他将消差望远镜对准天。

In the early 19th century, better quality achromatic microscopes created the new field of histology, the microscopic study of cells and tissues, which led to a number of neurological revelations.

19世纪初， 更高质量的消差显微镜催生了组织学这一新领域，对细胞和组织的显微研究，从而揭示了诸多神经学上的重要发现。

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的围巾，使在无的阳光下，它的颜也一直投射到她的脸上，并在她移动的脚周围投射出淡紫的阴影。