英汉解释

n. 坚定不移；恒久不变

同义词

n. perceptual constancy，stability

反义词

n.   changefulness，inconstancy

参考例句

1. Dove - Loving constancy and peace.
鸽-对坚贞与和平的爱。
2. The secret of success is constancy of purpose.
成功的秘诀是目标的坚定性。
3. A conservation is a statement of constancy in nature-in particular, constancy during change.
守恒定律说明自然界的不变性，特别是说明变化期间的不变性。

英英解释

n.
  1. the quality of being enduring and free from change or variation
  2. (psychology) the tendency for perceived objects to give rise to very similar perceptual experiences
  3. faithfulness and dependability in personal attachments (especially sexual fidelity)

网络释义

constancy
恒定; 稳定性; 恒定性; 恒有度;
brightness constancy
明度恒常性; 亮度恒定; 亮度不变;
Shape Constancy
形状的恒常性; 形状恒常性; 外形常性; 外形恒常性;
constancy meter
恒定计; 释义：恒定计;
colour constancy
色觉恒常; 颜色恒常性; 色恒定性,色觉恒常;