简单描述什么叫做ABS。
在制动过程中，制动系统能够自动调节车轮制动力，防止车轮抱死以取得最佳制动效能的电子装置。
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TheBentPyramidoutsideCairo__________ancientEgypt’sfirstattempttobuildasmooth-sidedpyramid.
Toobtainasatisfactoryresult，onemustapplytwo____ofpaintonacleansurface.
Itisimperativethatstudents_____theirtermpapersontime.
Lifeistooshort________________(不可每天将时间浪费在看电视上).
Urbancongestionwouldgreatlyberelievedifthe____chargedonpublictransportweremorereasonable.
