encumber
verb [usually passive] (formal)to make it difficult for somebody to do something or for something to happen 妨碍;阻碍;拖累 to be large and/or heavy and make it difficult for somebody to move 大(或重)得难以移动;使负担沉重
Word OriginMiddle English (in the sense ‘cause trouble to, entangle’; formerly also as incumber): from Old French encombrer ‘block up’, from en- ‘in’ + combre ‘river barrage’.