back up

常見例句

用作不及物動詞 (vi.)

• Because congestion prevents ships heading back to pick up new cargoes, it has helped to push prices up further.
  由于擁堵使船只難以返回運載新的貨物，起到了進(jìn)一步推高價格的作用。
• Some drivers will switch to the bridge to shorten theircommute, but as the traffic builds up there the motorway starts to look like abetter bet, so some switch back.
  一些司機(jī)為了縮短行程選擇走橋，但當(dāng)橋上變得擁堵時，高速路似乎是更好的選擇，因此一些司機(jī)又折返回來走橋。
• The fire won't burn because the flue is blocked up.
  因煙道堵塞火燒不起來。
• Clogged pipes backed up drain water.
  阻塞的水管堵塞了溝水。

用作及物動詞 (vt.)

• She has almost nobody to take up for her.
  她幾乎沒有人支持。
• The people are at the back of the government.
  人民是支持政府的。
• The regime had been propped up by foreign aid.
  該政權(quán)是靠外國援助維持著的。
• He turned his back on his own family when they did need help.
  他的家庭正需幫忙時，他不予援助。
• The car backed up and hit the tree.
  汽車倒退撞在樹上。
• The steps are easy to trace back.
  易于將這些步驟倒退回去。
• You can back up and restore full-text catalogs.
  可以備份和還原全文目錄。
• This option will back up files on the volume.
  該選項將備份卷中的文件。
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