be responsible for例句
        Oxidized cholesterol may 
be responsible for furring up the arteries.
氧化胆固醇可能是造成动脉堵塞的元凶。
I sometimes find it a strain to 
be responsible for the mortgage.
我有时觉得背负这笔抵押贷款很有压力。
Who will 
be responsible for the expedition's supplies?
谁将负责探险队的物资供应?