[Power English] drive up(down), stock up on, go bad, bulk

drive up (down)

to rapidly increase(decrease) something
(물가 등을) 빠르게 끌어올리다(끌어내리다)

A: I think we should start buying food in bulk to save money.
B: With inflation driving up the prices of everything, it's the smart thing to do.

A: There are so many computer companies competing for sales.
B: That's great. It'll drive down the prices.

A lack of wind and clouds is driving up the temperature.

A war will drive up the price of oil.

stock up on

to acquire more of something than one currently needs
비축하다
겨울을 나기 위해 김치을 미리 많이 담궈두는것도 stock up on 하는것이다.

We can stock up on items that will last a long time, like canned food.

Every autumn, my family stocks up on firewood for the winter.

As the hurricane approached, everyone stocked up on food and bottled water.

go bad

to be no longer good or safe to eat
상하다

영국에서는 go off라고도 한다. 반면, 미국 영어에서 go off는 explode(폭발하다),popular 과 같은 뜻으로 통한다.
The party went off without a hitch. 파티는 문제없이 진행되었다

Since it's not hot outside anymore, we can put everything in the garage. Nothing will go bad out there.

The onions went bad, and now the refrigerator stinks.

Pure honey will never go bad.