词典释义：
释义
n.
a possession that is useless or troublesome, especially one that is expensive to maintain or difficult to dispose of
（保管起来费钱又费事而又难以处理的）累赘东西，费而不惠的东西。
词源
" from the story that the kings of Siam gave such animals as a gift to courtiers considered obnoxious, in order to ruin the recipient by the great expense incurred in maintaining the animal．"
