build-up
/ˈbɪldʌp/noun
usu. in sing.
1
- a gradual accumulation or increase, typically of something negative and typically leading to a problem or crisis积累, 堆积（尤指不好的, 会导致问题或危机的东西）：
the build-up of carbon dioxide in the atmosphere.
大气中二氧化碳的积聚。
2
- a period of excitement and preparation in advance of a significant event（重大活动前的）兴奋时期; 准备过程：
the build-up to Christmas.
圣诞节前的准备。
2.1
- a favourable description in advance; publicity（预先进行的）舆论宣传; 制造舆论：
a showbiz build-up before the album release.
专辑发行前在娱乐界作的宣传。