6.If you can hold something up and put it down, it is called weight-lifting; if you can hold something up but can never put it down,it's called burden-bearing. Pitifully, most of people are bearing heavy burdens when they are in love.
举得起放得下的叫举重，举得起放不下的叫负重。可惜，大多数人的爱情，都是负重的。