He spends two hours running every day.
=He spends two hours (in running) every day.
=It takes (him) two hours (to run) every day.
他每天花两小时跑步.
They spend ten yuan on these hair clips.
=They spend ten yuan (in buying) these hair clips.
=(These hair clips) cost (them) ten yuan.
=They (paid) ten yuan for these hair clips.
他们花10元买这些发夹.