The Burton line is a clinical sign found in patients with lead poisoning. It is a thin, grey-blue line visible along the margin of the gums, at the base of the teeth.
权威例句
1.
Burton stumbled over the finishing line on the final day of the season, pipping Cambridge by just two points, having led the table by 18 points at one stage.
BBC: Burton success delights Brayford
2.
Italy have named Kristopher Burton at fly-half, and he will line up alongside Benetton Treviso team-mate Edoardo Gori, who wins his third cap at scrum-half.
BBC: Fergus McFadden to win first Ireland cap against Italy
3.
And he has a clothing line at Target and deals with Kraft, Burton, Oakley and Red Bull.