bat‧ter‧y S2 / bæt ə ri / 名词 ( 复数形式 batteries )

1 electricity [可数名词] an object that provides a supply of electricity for something such as a radio, car, or toy :

You have to take the top off to change the batteries .

When the red light comes on, you should recharge the battery .

The car’s got a flat battery .

a battery-operated hairdryer

2 a battery of something a group of many things of the same type :

a battery of medical tests

3 farm [可数名词] British English a row of small cage s in which chickens are kept, so that the farm can produce large numbers of eggs :

battery hens → free-range

4 guns [可数名词] several large guns used together :

an anti-aircraft battery

5 crime [不可数名词] law the crime of hitting someone :

He was charged with assault and battery . → assault and battery

6 recharge your batteries informal to rest or relax in order to get back your energy :

A week in the mountains should recharge my batteries.

COLLOCATIONS

形容词

flat British English , dead American English (= with no more electricity in it ) I’d left the headlights on and the battery was completely flat.

low (= with little electricity in it ) He could see the battery was low on his laptop.

a car/torch/phone etc battery Have you checked your mobile phone battery?

a rechargeable battery (= one that you can put more electricity in and use again ) The camera uses rechargeable batteries.

a spare battery (= an extra one, in case you need it ) Take a torch and spare batteries.

动词

change/replace the battery (= put a new battery in something ) You may need to change the battery in the smoke alarm.

charge/recharge a battery (= put more electricity in it ) It takes eight hours to fully recharge the battery.

use batteries ( also run on batteries ) The clock runs on two 9-volt batteries.

put a battery in She had put new batteries in the radio.

take a battery out I’’ll take the batteries out while I’m not using it.

名词

a battery charger (= a piece of equipment for charging batteries ) Don’t forget to pack your battery charger.

battery power You can plug your laptop in or use it on battery power.

battery life (= how long a battery produces electricity ) My old phone had a longer battery life.

短语

battery powered/operated A lot of children’s toys are battery operated.