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plus-minus是什么意思

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plus-minus是什么意思
plus-minus
正负;加减

plus-minus
noun
[often as modifier](Ice Hockey)a running total used as an indication of a player's effectiveness, calculated by adding one for each goal scored by the player's team in even-strength play while the player is on the ice, and subtracting one for each goal conceded
(冰球)累计得分
adverb
(S. African)more or less; roughly
(南非)左右,前后
it was plus-minus 8.30 a.m.
时间是在上午八点半左右.