update和upgrade怎么区别,分别在什么情况下使用?
发布网友
发布时间：2022-04-23 00:13
共3个回答
热心网友
时间：2022-05-03 03:08
其实两个根本不是一个意思，update是指更新，是量的变化，upgrade是指升级，是质的变化
热心网友
时间：2022-05-03 04:26
在数据库中有update，更新一条数据是“质”的变化而不是“量”
热心网友
时间：2022-05-03 06:01
update
英 [ˌʌpˈdeɪt] 美 [ʌpˈdet]
1. VERB更新；使现代化 If you update something, you make it more modern, usually by adding new parts to it or giving new information.
例：He was back in the office, updating the work schele on the computer...
他已回到办公室，正在电脑上更新工作日程。
Airlines would prefer to update rather than retrain crews.
航空公司更愿意换新员工而不是对旧员工重新进行培训。
2. N-COUNT最新消息；快讯；速递 An update is a news item containing the latest information about a particular situation.
She had heard the news-flash on a TV channel's news update.
她在一家电视台的新闻快讯中听到了这则简明新闻。
3. VERB为…提供最新消息；把最新进展告诉（某人） If you update someone on a situation, you tell them the latest developments in that situation.
We'll update you on the day's top news stories.
我们将为您提供当天的重要新闻。
I would just update them on any news we might have.
我们一有新消息我就会告诉他们。
upgrade
英 [ˌʌpˈgreɪd] 美 [ˈʌpˌɡred]
1. VERB改良；更新；升级 If equipment or services are upgraded, they are improved or made more efficient.
Helicopters have been upgraded and modernized...
直升机已经更新换代，装配了现代化设备。
Medical facilities are being reorganized and upgraded.
正在对医疗设施进行重组和升级。
2. VERB擢升；晋升；提升；提拔 If someone is upgraded, their job or status is changed so that they become more important or receive more money.
He was upgraded to security guard.
他被擢升为保安。
3. VERB(使)升级到更高待遇;(使)升舱 If you upgrade or are upgraded, you change something such as your air ticket or your hotel room to one that is more expensive.
You can upgrade from self-catering accommodation to a hotel.
您可以将自理膳食旅店升级为酒店。
