"She supported him during the illness"
"Her children always backed her up"
"The bully had to back down"
"Can you back up your claims?"
"You'd better back up these files!"
"The leaves clog our drains in the Fall"
"The water pipe is backed up"
《牛津词典》
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youdao
《牛津词典》
《牛津词典》
《牛津词典》
《柯林斯英汉双解大词典》
《柯林斯英汉双解大词典》
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youdao
youdao
youdao
youdao
youdao
youdao
youdao
youdao
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youdao
《新英汉大辞典》
《新英汉大辞典》
youdao
youdao
youdao
youdao
youdao
youdao
youdao
youdao