这幅画的精妙之处在于色彩渐变极其微妙，需要仔细观察才能体会。

The ___subtlety of the color transitions in this painting requires careful observation to appreciate.

她精致的妆容在不显山露水的情况下凸显了她的天生丽质。

The ___subtlety of her makeup enhanced her natural beauty without being obvious.

红酒的风味中带有难以察觉的微妙差异，只有专业品酒师才能分辨。

The ___subtlety in the wine's flavor can only be detected by professional sommeliers.