delicate 侧重指需要谨慎处理和对待。
fine 隐含“不易察觉的”意味。
subtle 侧重有洞察、领悟事物细微差别以及微妙关系的能力。
参考例句
1. What it taught me is very subtle. 它对我的影响是非常微妙的。
2. It seems that nothing can cheat his subtle mind. 似乎没有什么能够欺骗他那敏锐的头脑。
3. Some of these techniques are subtle and some are blatant. 采用的手法一些是精细的、一些是外露的。
英英解释
adj.
1. be difficult to detect or grasp by the mind
2. faint and difficult to analyze
3. able to make fine distinctions
4. working or spreading in a hidden and usually injurious way