backup

主要翻译
英语		中文
backup, back-up n	(support)	SCSimplified Chinese 后援 hòu yuán
	When the policeman realized he couldn't handle the situation alone, he called for backup.
	当那名警员认识到他无法单独处理该情况时，他请求了支援。
backup, back-up n	(duplicate copy)	SCSimplified Chinese 备用品 TCTraditional Chinese 備用品
		SCSimplified Chinese 替补品
		SCSimplified Chinese 备份 bèi fèn
	This is a backup; the original copy is in the filing cabinet.
	这是备份，原件在文件柜内。
backup, back-up n	(accumulation)	SCSimplified Chinese 一堆 yì duī TCTraditional Chinese 一堆
	There is a backup of paperwork that we need to file by the end of the day.
	我们还有一堆书面工作需要在当天结束前提交。
backup, back-up n	informal (traffic jam) (交通)	SCSimplified Chinese 阻塞 zǔ sè
	There is a backup on the interstate just north of the city.
	城正北的州际公路处出现交通阻塞。
backup, back-up n as adj	(alternative)	SCSimplified Chinese 备用的 bèi yòng de TCTraditional Chinese 備用的
		SCSimplified Chinese 备用 TCTraditional Chinese 備用
	I'm going to keep my old laptop as a backup computer just in case my new one breaks down.
	我打算把我的旧笔记本作为备用，以防新电脑坏了。

主要翻译
英语		中文
back [sth] up, back up [sth] vtr phrasal sep	(computing: make copies)	SCSimplified Chinese 备份 bèi fèn
备注: The single-word form is used when the term is or modifies a noun.
	It is advisable to back up all the files on your computer regularly, in case of breakdown.
	建议定期备份电脑上的所有文件，以防发生故障。
back [sb] up vtr phrasal sep	(support) (某人的说法，某人的话)	SCSimplified Chinese 证实 zhèng shí TCTraditional Chinese 證實 / 証實
	Go ahead and tell the boss just what happened; I'll back you up on it.
	去吧，直接告诉老板发生了什么事，我会支持你的。
back [sth] up, back up [sth] vtr phrasal sep	(confirm: fact, argument)	SCSimplified Chinese 支持 zhī chí TCTraditional Chinese 支持
	The accused man insisted that his wife would back up his story and give him an alibi.
	被告坚称他的妻子会证实他所述的事件经过，为他提供不在场证明。
back [sth] up, back up [sth] vtr phrasal sep	(vehicle: reverse) (车辆: 倒退行驶)	SCSimplified Chinese 倒 TCTraditional Chinese 倒
	It's difficult to back up a truck when a trailer is attached.
	带拖车的卡车很难倒车。
back up vi phrasal	(move in reverse)	SCSimplified Chinese 倒车 dào chē
	A loud beeping alerts other road users when the lorry is backing up.
	卡车倒车时，响亮的哔哔声提醒着路上的其他人。

其他翻译
英语		中文
back up vi phrasal	(water: accumulate) (水)	SCSimplified Chinese 积聚 jī jù TCTraditional Chinese 積聚
	Water has backed up into the toilet and the flush won't work.
	污水返回并积聚在马桶内，冲水装置完全不起作用。
back up vi phrasal	(work, tasks, etc.: accumulate)	SCSimplified Chinese 备选
		SCSimplified Chinese 替补

复合形式： backup \| ~~back up~~
英语		中文
backup copy, back-up copy n	(data: duplicate)	SCSimplified Chinese 备份 bèi fèn
	It's a good idea to make a backup copy of important documents.
backup light, back-up light (US), reversing light (UK) n	usually plural (light when vehicle moves backward)	SCSimplified Chinese 倒车灯
backup plan n	(scheme: alternative)	SCSimplified Chinese 后备计划
	If the buses are not running, the back-up plan is to take a taxi.
backup plan n	(contingency plan)	SCSimplified Chinese 应急计划
backup singer n	(singer: supports main vocalist)	SCSimplified Chinese 伴唱歌手
	The backup singers were amazing at the concert.

Collins Chinese Dictionary Plus (3rd edition), 2011:

backup [ˈbækʌp]

I adj

1 [+ staff, services] 备(備)用的 bèiyòng de

2 (Comput) [+ copy, file, disk] 备(備)份的 bèifèn de

II n

1 [u] (=support) 支持 zhīchí

2 [c] (=reserve) 备(備)份 bèifèn [个 gè]

在这些条目还发现'backup'：

在英文解释里：

中文：

习惯性搭配： [turned to, called on] the backup plan, Always have a backup of your [files, photos]., a backup of your (most) important [files], 更多……

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