Mìshū de gōngzuò jiùshì shàngchuánxiàdá.
A secretary's job is to relay messages up and down the chain.
Zhège bùmén fùzé shàngchuánxiàdá.
This department is responsible for information flow between upper and lower levels.
Tā zài shàngchuánxiàdá fāngmiàn fēicháng chènzhí.
He's highly competent at relaying information up and down.
