accumulation ·noun
Definition: an amount of something that has been collected Level: C2
尽管证据不断积累，政府却无所作为。
Despite this ___accumulation of evidence, the government did nothing.
成功是什么？对一些人来说，它是财富的积累；对另一些人来说，它是名声、健康、爱。
What is success? For some it is the ___accumulation of possessions, for others it's fame, health, love.
灰尘的缓慢积累让房间看起来很脏。
The slow ___accumulation of dust made the room look dirty.