Superoxide dismutase (SOD) which is a clearance agent to free radical can clear lipid peroxides and is a role in protecting cells and tissue.

SOD是氧自由基的清除剂，能清除脂质过氧化产物，对组织细胞产生保护作用。

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Fits can range from free running or sliding, where a certain amount of clearance, exists between mating parts, to press or interference fits where parts are forced together under pressure.

配合可分为结合件间有自由转动或滑动从而需要具有一定间隙量的间隙配合以及结合件需要紧密压靠一起 的压配合或过盈配合。

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This would lead to an increase of the free fraction that would be subject to a fast renal clearance.

这将导致被肾脏快速清除的游离部分(分数)增加。

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In the same game Mikel made a headed clearance of a free kick in his own penalty area in the 90th minute.

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But it was the away side who took the lead on 25 minutes when Campbell's horrific attempted clearance allowed Reo-Coker a free run on goal from which the skipper coolly slotted past Jens Lehmann.

BBC: SPORT | Football | Premiership | Arsenal 2-3 West Ham

Watford defender Adrian Mariappa made a sharp clearance after Loach had spilled a Taarabt free-kick, while Taarabt played a superb cut-back that picked out Faurlin, who had time to place his shot but wastefully drilled his effort over from 14 yards as the opening half ended goalless.

BBC: Watford 0-2 QPR