沙井口 Traditional form: 沙井口 Pinyin (reading): shājǐngkǒu Definitions: manhole Characters: 沙 - sand, gravel, pebbles; granulated 井 - well, mine shaft, pit 口 - mouth; entrance, gate, opening Traditional characters: 沙 - sand, gravel, pebbles; granulated 井 - well, mine shaft, pit 口 - mouth; entrance, gate, opening