1 N-VAR 清除;清理 Clearance is the removal of old buildings, trees, or other things that are not wanted from an area. 清除;清理
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...a slum clearance operation in Nairobi.
内罗毕拆除贫民窟的行动
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The UN pledged to help supervise the clearance of mines.
联合国承诺协助监督扫雷工作。
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...widespread clearance of jungle land.
丛林地带的大面积砍伐
2 N-VAR (官方的)批准,许可 If you get clearance to do or have something, you get official approval or permission to do or have it. (官方的)批准,许可
SYN permission, consent, endorsement, green light
3 N-VAR (路面、河面与上方桥梁之间的)净空,间隙,间距 The clearance of a bridge is the distance between the lowest point of the bridge and the road or the water under the bridge. (路面、河面与上方桥梁之间的)净空,间隙,间距
SYN space, gap, margin, allowance
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