backing
[ˈbækɪŋ]
n.
支持;
支持者;
背衬;
（独唱或独奏的）伴奏;
v.
（使）后退，（使）倒退( back的现在分词);
支持;
作…的衬里;
（用证据或理论来）证实（一种理论或主张）;
例句:
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IMF backing was also required and was later given.
来自BBC
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Make a point of backing up your files at regular intervals.
一定要定期备份文件。
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'Re still backing the car out of the driveway.
来自WSJ
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He's backing away from the policies and style of his predecessor.
他正脱离其前任的政策和风格。
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"I wouldn't know about that, Miss," the woman said, backing away.
“我不想知道那件事情，小姐，”这个女人一边后退一边说。
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However, they were always more than just backing.
来自BBC