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