subtle

The chef added a subtle hint of lemon to the sauce to enhance the flavor of the fish.

(Chinese) 厨师在酱汁中加入了一丝微妙的柠檬味，以提升鱼的鲜味。

There was a subtle change in the atmosphere of the room when the CEO walked in.

(Chinese) 当首席执行官走进房间时，气氛发生了微妙的变化。