海鲜: seafood...
巨人: giant...
花瓶: flower vase, just a pretty face...
广场: public square, plaza...
撤换: to dismiss and replace (sb), to replace (sb or sth)...
设法: to try, to make an attempt, to think of a way (to accomplish sth)...
放下: to lay down, to put down, to let go of, to relinquish, to set aside, to lower (the blinds etc)...
潜力: potential, capacity...