自2010年至今的四级考试中， 共出现过 次
自2010年至今的六级考试中， 共出现过 次
N-COUNT (尤指选票或比分的)差额，差数 A margin is the difference between two amounts, especially the difference in the number of votes or points between the winner and the loser in an election or other contest.
They could end up with a 50-point winning margin...
The Sunday Times remains the brand leader by a huge margin...
N-COUNT 页边空白;页边;白边 The margin of a written or printed page is the empty space at the side of the page.
She added her comments in the margin.
N-VAR 余地;富余 If there is a margin for something in a situation, there is some freedom to choose what to do or decide how to do it.
The money is collected in a straightforward way with little margin for error...
These charges can carry prison terms of up to five years, though there's a wide margin of discretion...
N-COUNT 边缘;边沿 The margin of a place or area is the extreme edge of it.
...the low coastal plain along the western margin...
These islands are on the margins of human habitation.
N-PLURAL （社会、群体或活动中的）边缘地位，非主体地位 To be on the margins of a society, group, or activity means to be among the least typical or least important parts of it.
Students have played an important role in the past, but for the moment, they're on the margins.
...signs of the party's rapid retreat to the political margins.