... 使某事处于高水平 keep up 使某事物处于高水平 keep up 国内处于领先水平 The Domestic Leading Level ...
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cause sth to remain at a high level
(b) cause sth to remain at a high level 使某事物处于高水平 *The high cost of raw materials is keeping prices up. 原料费用昂贵使得产品价格居高不下.
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