及物动词
名词
1. (标明相关信息的)小布条，小标签，小纸条
A tab is a small piece of cloth or paper that is attached to something, usually with information about that thing written on it.
2. (商品、服务的)总价钱，账单
A tab is the total cost of goods or services that you have to pay, or the bill or check for those goods or services.
3. (易拉罐的)拉环
A tab is a metal strip that you pull off the top of a can of drink in order to open it.
4. (尤指非法出售的)药片
A tab is a drug, especially one that is sold illegally, which is in tablet form.
5. 密切注意，严密监视(某人的一举一动)
If someone keeps tabs on you, they make sure that they always know where you are and what you are doing, often in order to control you.
6. (替一群人)付账，承担费用
If you pick up the tab, you pay a bill on behalf of a group of people or provide the money that is needed for something.
1. a dose of medicine in the form of a small pellet
2. a short strip of material attached to or projecting from something in order to facilitate opening or identifying or handling it
e.g. pull the tab to open the can
files with a red tab will be stored separately
the collar has a tab with a button hole
the filing cards were organized by cards having indexed tabs
3. the key on a typewriter or a word processor that causes a tabulation
Synonym: tab key
4. sensationalist journalism
Synonym: yellow journalismtabloid
5. the bill in a restaurant
e.g. he asked the waiter for the check